var STARBAR_STARS_PER_BAR = 5;

// Special ratings values, must be < 0

var STARBAR_NI_VALUE = -1;

var STARBAR_NOP_VALUE = -2;

var STARBAR_CLEAR_VALUE = -3;

//

var STARBAR_TYPE_EMPTY = 0;

var STARBAR_TYPE_PREDICT = 1;

var STARBAR_TYPE_RATE = 2;

var STARBAR_TYPE_STATIC = 3;

var STARBAR_TYPE_AVG = 4;

var STARBAR_TYPE_MAX = 4;

//

var STARBAR_HEIGHT = 15;

var STARBAR_STAR_WIDTH = 16;

var STARBAR_GAP_WIDTH = 3;

var STARBAR_WIDTH = STARBAR_STARS_PER_BAR*STARBAR_STAR_WIDTH + (STARBAR_STARS_PER_BAR-1)*STARBAR_GAP_WIDTH;

var STARBAR_ROW_PADDING = 3;

//

var STARBAR_NI_MINI_BUTTON_WIDTH = 19;

var STARBAR_NI_MINI_BUTTON_HEIGHT = 15;

var STARBAR_NI_BUTTON_HEIGHT = 16;

var STARBAR_NI_BUTTON_WIDTH = 92;

var STARBAR_CLEAR_BUTTON_HEIGHT = 16;

var STARBAR_CLEAR_BUTTON_WIDTH = 92;

var STARBAR_NOP_BUTTON_HEIGHT = 16;

var STARBAR_NOP_BUTTON_WIDTH = 92;

//

// Storing and preloading of starbar images

//

var StarbarImages;

	function roll_over(img_name, img_src)
   {
   document[img_name].src = img_src;
   }

function StarbarImageName(starType, n) {

    return STARBAR_IMG_ROOT + "stars_" + starType + "_" + n + ".gif";

}

function StarbarImage(starType, numStars) {

    // If already fetched and cached, use it.

    // Otherwise cache it now for future use.

    var n = Math.min(Math.max(Math.round(numStars * 10), 0), 10*STARBAR_STARS_PER_BAR);

    if (! StarbarImages[starType][n]) {

        StarbarImages[starType][n] = new Image(STARBAR_WIDTH, STARBAR_HEIGHT);

        StarbarImages[starType][n].src = StarbarImageName(starType, n);

    }

    return StarbarImages[starType][n].src;

}

function StarbarNoOpinionImage(selected) {

    return STARBAR_IMG_ROOT

        + (selected ? "nop_selected.gif" : "nop_low.gif");

}

function IsClearImageAvailable(imgNum) {

    return (StarbarTypes[imgNum] == STARBAR_TYPE_RATE) || ((StarbarSpecialValues[imgNum] != 0) && (StarbarSpecialValues[imgNum] != STARBAR_NOP_VALUE));

}

function StarbarClearImage(imgNum, selected) {

    return STARBAR_IMG_ROOT 

        + (selected ? "clear_selected.gif" : (IsClearImageAvailable(imgNum) ? "clear_low.gif" : "clear_unavailable.gif"));

}

function StarbarNotInterestedImage(selected) {

    return STARBAR_IMG_ROOT

        + (selected ? "ni_selected.gif" : "ni_low.gif");

}

function StarbarNotInterestedMiniImage(selected) {

    return STARBAR_IMG_ROOT

        + (selected ? "ni_slim_bar_high.gif" : "ni_slim_bar_low.gif");

}

function StarbarPreload() {

    // Preload the images that are used for tracking mouse movement.

    // Note that this is only called if there is a starbar on the page,

    // so it is safe to include this on every page.

    if (! StarbarImages) {

        StarbarImages = new Array();

        for (var j = 0; j <= STARBAR_TYPE_MAX; j++) {

            StarbarImages[j] = new Array();

        }

        for (var j = STARBAR_TYPE_RATE; j <= STARBAR_TYPE_RATE; j++) {

        //for (j = 0; j <= STARBAR_TYPE_MAX; j++) {

            for (var i = 1; i <= STARBAR_STARS_PER_BAR; i++) {

                StarbarImages[j][i] = new Image(STARBAR_WIDTH, STARBAR_HEIGHT);

                StarbarImages[j][i].src = StarbarImageName(j, 10*i);

            }

        }

        StarbarEnabled = true;

    }

}

var StarbarTooltip = new Array();

StarbarTooltip[STARBAR_CLEAR_VALUE] = 'Click to remove rating';

StarbarTooltip[STARBAR_NOP_VALUE] = 'Click if "No Opinion"';

StarbarTooltip[STARBAR_NI_VALUE] = 'Click if "Not Interested"';

StarbarTooltip[1] = 'Click if "Did Not Like It"';

StarbarTooltip[2] = 'Click if "Just OK"';

StarbarTooltip[3] = 'Click if "Liked It"';

StarbarTooltip[4] = 'Click if "Really Liked It"';

StarbarTooltip[5] = 'Click if "Loved It"';

//

// Place to store state about all the starbars on the page

//

var StarbarCount = 0;

var User_ID = 0;

var StarbarItemIds = new Array();

var StarbarTypes = new Array();

var StarbarNumStars = new Array();

var StarbarRefresh = new Array();

var StarbarTimers = new Array();

var StarbarPredictions = new Array();

var StarbarSpecialValues = new Array();

var StarbarLastEntered = -1;

//

// Interaction functions

//

var StarbarEnabled = false;

//

function StarbarMouseOver(imgNum, whichStar) {

    // Cancel any background request to restore this image.

    if (StarbarTimers[imgNum] != 0) {

        window.clearTimeout(StarbarTimers[imgNum]);

        StarbarTimers[imgNum] = 0;

    }

    // If we left an image, restore it right now.

    if (StarbarLastEntered >= 0 && StarbarLastEntered != imgNum) {

        StarbarRestore(StarbarLastEntered);

    }

    // If we're now over one of the special buttons,

    // and we were previously on some othe part of this widget,

    // make sure we restore the stars.

    if (StarbarLastEntered >= 0

            && StarbarLastEntered == imgNum

            && whichStar < 0) {

        StarbarRestore(StarbarLastEntered);

    }

    StarbarLastEntered = imgNum;

    // Make the starbar show appropriate feedback.

    if (whichStar > 0) {

        document.images["starbar"+imgNum].src = StarbarImage(STARBAR_TYPE_RATE, whichStar);

    } else if (whichStar == STARBAR_NI_VALUE) {

        document.images["starbar"+imgNum].src = StarbarImage(STARBAR_TYPE_EMPTY, 0);

    } else if (whichStar == STARBAR_NOP_VALUE) {

        document.images["starbar"+imgNum].src = StarbarImage(STARBAR_TYPE_PREDICT, StarbarPredictions[imgNum]);

    } else if (whichStar == STARBAR_CLEAR_VALUE && IsClearImageAvailable(imgNum)) {

        document.images["starbar"+imgNum].src = StarbarImage(STARBAR_TYPE_PREDICT, StarbarPredictions[imgNum]);

        document.images["starbar_clear"+imgNum].src = StarbarClearImage(imgNum, true);

    } else {

        //

    }

    if (document.images["starbar_nop"+imgNum]) {

        document.images["starbar_nop"+imgNum].src = StarbarNoOpinionImage((whichStar == STARBAR_NOP_VALUE));

    }

    if (document.images["starbar_ni"+imgNum]) {

        document.images["starbar_ni"+imgNum].src = StarbarNotInterestedImage((whichStar == STARBAR_NI_VALUE));

    }

    if (document.images["starbar_ni_mini"+imgNum]) {

        document.images["starbar_ni_mini"+imgNum].src = StarbarNotInterestedMiniImage((whichStar == STARBAR_NI_VALUE));

    }

    // Overwrite the ugly link text in the status region.

    window.status = StarbarTooltip[whichStar];

    return false;

}

function StarbarRestore(imgNum) {

    // Restore the starbar state.

    if (StarbarSpecialValues[imgNum] == STARBAR_NI_VALUE) {

        StarbarTypes[imgNum] = STARBAR_TYPE_EMPTY;

    }

    document.images["starbar"+imgNum].src = StarbarImage(StarbarTypes[imgNum], StarbarNumStars[imgNum]);

    if (document.images["starbar_clear"+imgNum]) {

        document.images["starbar_clear"+imgNum].src = StarbarClearImage(imgNum, false);

    }

    if (document.images["starbar_nop"+imgNum]) {

        document.images["starbar_nop"+imgNum].src = StarbarNoOpinionImage((StarbarSpecialValues[imgNum] == STARBAR_NOP_VALUE));

    }

    if (document.images["starbar_ni"+imgNum]) {

        document.images["starbar_ni"+imgNum].src = StarbarNotInterestedImage((StarbarSpecialValues[imgNum] == STARBAR_NI_VALUE));

    }

    if (document.images["starbar_ni_mini"+imgNum]) {

        document.images["starbar_ni_mini"+imgNum].src = StarbarNotInterestedMiniImage((StarbarSpecialValues[imgNum] == STARBAR_NI_VALUE));

    }

    StarbarTimers[imgNum] = 0;

    if (StarbarLastEntered == imgNum) {

        StarbarLastEntered = -1;

    }

    window.status = "";

}

function StarbarMouseOut(imgNum, whichStar) {

    // Restore the image to the saved state, once a little time has elapsed.

    if (! StarbarTimers[imgNum]) {

        StarbarTimers[imgNum] = window.setTimeout("StarbarRestore("+imgNum+")", 100);

    }

    window.status = "";

}

function StarbarClick(imgNum, whichStar) {

    var itemId;

    var rateHref;

    var rateWindow;

    if (! StarbarEnabled) {

        return void(0);

    }

    StarbarEnabled = false;

    itemId = StarbarItemIds[imgNum];

    // Update the saved state of the starbar and the display

    if (whichStar == STARBAR_NI_VALUE) {

        rateHref = "?movieid="+itemId+"&value="+"norec";

        StarbarTypes[imgNum] = STARBAR_TYPE_EMPTY;

        StarbarNumStars[imgNum] = StarbarPredictions[imgNum];

        StarbarSpecialValues[imgNum] = whichStar;

    } else if (whichStar == STARBAR_NOP_VALUE) {

        rateHref = "?movieid="+itemId+"&value="+"noseen";

        StarbarTypes[imgNum] = STARBAR_TYPE_PREDICT;

        StarbarNumStars[imgNum] = StarbarPredictions[imgNum];

        StarbarSpecialValues[imgNum] = whichStar;

    } else if (whichStar == STARBAR_CLEAR_VALUE) {

        if ((StarbarTypes[imgNum] != STARBAR_TYPE_RATE)

             && (StarbarSpecialValues[imgNum] == 0)) {

            StarbarEnabled = true;

            return void(0);

        }

        rateHref = "?movieid="+itemId+"&value="+"clear";

        StarbarTypes[imgNum] = STARBAR_TYPE_PREDICT;

        StarbarNumStars[imgNum] = StarbarPredictions[imgNum];

        StarbarSpecialValues[imgNum] = 0;

    } else {

        rateHref = "?movieid="+itemId+"&value="+whichStar;

        StarbarTypes[imgNum] = STARBAR_TYPE_RATE;

        StarbarNumStars[imgNum] = whichStar;

        StarbarSpecialValues[imgNum] = 0;

    }

    rateHref = STARBAR_SET_PAGE + rateHref + "&user_id=" + User_ID +"&url=" + escape(window.location.href);

    window.setTimeout("StarbarRestore("+imgNum+")", 10);

    // StarbarRestore(imgNum);

    // Display any popups

/*    if (doRatingsPopup == "true") {

        showRatingsPop();

        doRatingsPopup = "false";

    }

*/

    // Save the rating.  

    if (StarbarRefresh[imgNum]) {

        // Must refresh this page

        window.location.href = rateHref;

        StarbarEnabled = true;

        return void(0);

    }

    // Try to use a 204 No Content response.

    if (1) {

        window.location.href = rateHref

                               + "&ncok=true";

        StarbarEnabled = true;

        return void(0);

    }

    // Try to use an IFRAME.

    if (window.callback_iframe) {

        window.callback_iframe.location.href = rateHref+"&iframe=t";

        // Return special value to leave this window alone

        StarbarEnabled = true;

        return void(0);

    }

    // If that failed, try using a pop-up window.

    rateWindow =

        window.open("",

                    "nf_gauge_set",

                    "resizable=no,dependent=yes,width=1,height=1,screenX="

                    +window.screenX+",screenY="+window.screenY

                    +",top="+window.screenX+",left="+window.screenY);

    if (rateWindow && ! rateWindow.closed) {

        //rateWindow.blur();

        rateWindow.location.href = rateHref+"&js=t";

        //self.focus();

        StarbarEnabled = true;

        return void(0);

    }

    // If that failed, run in this window.

    window.location.href = rateHref;

    StarbarEnabled = true;

    return void(0);

}

//

// Starbar creation

//

function StarbarInsert1(imgNum, itemId, starType, numStars, refreshWhenChanged) {

    var altText;

    var imgAttrs;

    StarbarPreload();

    if (numStars == 1) {

        altText = numStars+" star";

    } else {

        altText = numStars+" stars";

    }

    imgAttrs = " src='" + StarbarImage(starType, numStars) + "'"

               + " alt='" + altText + "'"

               + " width=" + STARBAR_WIDTH

               + " height=" + STARBAR_HEIGHT

               + " border=0";

    // Emit the HTML

    with (document) {

        if (itemId < 0) {

            // No real itemID, so just a non-interactive image

            write("<img"+imgAttrs+">");

        } else {

            // Only integral input allowed.

            // Associate the gap between stars with the star just to the left of the gap.

            write("<map name='starbar"+imgNum+"'>");

            for (var i = 1; i <= STARBAR_STARS_PER_BAR; i++) {

                var left = (i-1) * (STARBAR_STAR_WIDTH + STARBAR_GAP_WIDTH);

                var right = Math.min(left + STARBAR_STAR_WIDTH +STARBAR_GAP_WIDTH - 1, STARBAR_WIDTH);

                var top = 0;

                var bottom = STARBAR_HEIGHT - 1;

                write("<area href='javascript:StarbarClick("+imgNum+","+i+");' alt='"+StarbarTooltip[i]+"'");

                write(" onMouseOver='StarbarMouseOver("+imgNum+","+i+");'");

                write(" onMouseOut='StarbarMouseOut("+imgNum+","+i+");'");

                write(" shape='rect' coords='"+left+","+top+","+right+","+bottom+"'>");

            }

            write("</map>");

            write("<img"+imgAttrs+" name='starbar"+imgNum+"' usemap='#starbar"+imgNum+"'>");

        }

    }

}



//itemId, starType, numStars, predictedRating, isNotInterested, isNoOpinion, showNI, 

//showNiMini, showClear, showNoOpinion, refreshWhenChanged

function StarbarInsert(user_id, itemId, starType,

                       numStars, predictedRating,

                       isNotInterested, isNoOpinion,

                       showNI, showNiMini, showClear, showNoOpinion,

                       refreshWhenChanged) {

    var imgNum = StarbarCount++;

    var useTable = showNI || showNiMini || showClear || showNoOpinion;

    if (itemId >= 0) {

        // Remember the true state of the starbar.

        User_ID = user_id;

		  StarbarItemIds[imgNum] = itemId;

        StarbarTypes[imgNum] = starType;

        StarbarNumStars[imgNum] = numStars;

        StarbarRefresh[imgNum] = refreshWhenChanged;

        StarbarTimers[imgNum] = 0;

        if (isNotInterested) {

            StarbarSpecialValues[imgNum] = STARBAR_NI_VALUE;

        } else if (isNoOpinion) {

            StarbarSpecialValues[imgNum] = STARBAR_NOP_VALUE;

        } else {

            StarbarSpecialValues[imgNum] = 0;

        }

        StarbarPredictions[imgNum] = predictedRating;

    }

    var totalWidth = STARBAR_WIDTH;

    if (showNiMini) {

        totalWidth += STARBAR_NI_MINI_BUTTON_WIDTH;

    }

    with (document) {

        if (useTable) {

            write("<table cellpadding=0 cellspacing=0 cellborder=0 width='" + totalWidth + "'>");

            write("<tr>");

        }

        if (showNiMini) {

            write("<td align=right><nobr>");

            write("<a href='javascript:StarbarClick("+imgNum+","+STARBAR_NI_VALUE+");'"

                  + " onMouseOver='StarbarMouseOver("+imgNum+","+STARBAR_NI_VALUE+")'"

                  + " onMouseOut='StarbarMouseOut("+imgNum+","+STARBAR_NI_VALUE+")'"

                  + ">");

            write("<img src='" + StarbarNotInterestedMiniImage(isNotInterested) + "'"

                  + " width=" + STARBAR_NI_MINI_BUTTON_WIDTH

                  + " height=" + STARBAR_NI_MINI_BUTTON_HEIGHT

                  + " border=0"

                  + " alt='" + StarbarTooltip[STARBAR_NI_VALUE] + "'"

                  + " name='starbar_ni_mini" + imgNum + "'"

                  + ">");

            write("</a>");

            write("</nobr></td>");

        }

        if (useTable) {

            write("<td align=left><nobr>");

        }

        StarbarInsert1(imgNum, itemId, (isNotInterested ? STARBAR_TYPE_EMPTY : starType),

                       numStars, refreshWhenChanged);

        if (useTable) {

            write("</nobr></td>");

            write("</tr>");

        }

        if (showNI) {

            write("<tr><td height=" + (STARBAR_NI_BUTTON_HEIGHT+STARBAR_ROW_PADDING) + " align=center><nobr>");

            write("<a href='javascript:StarbarClick("+imgNum+","+STARBAR_NI_VALUE+");'"

                  + " onMouseOver='StarbarMouseOver("+imgNum+","+STARBAR_NI_VALUE+")'"

                  + " onMouseOut='StarbarMouseOut("+imgNum+","+STARBAR_NI_VALUE+")'"

                  + ">");

            write("<img src='" + StarbarNotInterestedImage(isNotInterested) + "'"

                  + " width=" + STARBAR_NI_BUTTON_WIDTH

                  + " height=" + STARBAR_NI_BUTTON_HEIGHT

                  + " border=0"

                  + " alt='" + StarbarTooltip[STARBAR_NI_VALUE] + "'"

                  + " name='starbar_ni"+imgNum+"'"

                  + ">");

            write("</a>");

            write("</nobr></td></tr>");

        }

        if (showClear) {        

            write("<tr><td height=" + (STARBAR_CLEAR_BUTTON_HEIGHT+STARBAR_ROW_PADDING) + " align=center><nobr>");



            write("<a href='javascript:StarbarClick("+imgNum+","+STARBAR_CLEAR_VALUE+");'"

                  + " onMouseOver='StarbarMouseOver("+imgNum+","+STARBAR_CLEAR_VALUE+")'"

                  + " onMouseOut='StarbarMouseOut("+imgNum+","+STARBAR_CLEAR_VALUE+")'"

                  + ">");

            write("<img src='" + StarbarClearImage(imgNum, false) + "'"

                  + " width=" + STARBAR_CLEAR_BUTTON_WIDTH

                  + " height=" + STARBAR_CLEAR_BUTTON_HEIGHT

                  + " border=0"

                  + " alt='" + StarbarTooltip[STARBAR_CLEAR_VALUE] +"'"

                  + " name='starbar_clear"+imgNum+"'"

                  + ">");



            write("</a>");

            write("</nobr></td></tr>");

        }

        if (showNoOpinion) {

            write("<tr><td height=" + (STARBAR_NOP_BUTTON_HEIGHT+STARBAR_ROW_PADDING) + " align=center><nobr>");

            write("<a href='javascript:StarbarClick("+imgNum+","+STARBAR_NOP_VALUE+");'"

                  + " onMouseOver='StarbarMouseOver("+imgNum+","+STARBAR_NOP_VALUE+")'"

                  + " onMouseOut='StarbarMouseOut("+imgNum+","+STARBAR_NOP_VALUE+")'"

                  + ">");

            write("<img src='" + StarbarNoOpinionImage(isNoOpinion) + "'"

                  + " width=" + STARBAR_NOP_BUTTON_WIDTH

                  + " height=" + STARBAR_NOP_BUTTON_HEIGHT

                  + " border=0"

                  + " alt='" + StarbarTooltip[STARBAR_NOP_VALUE] + "'"

                  + " name='starbar_nop"+imgNum+"'"

                  + ">");

            write("</a>");

            write("</nobr></td></tr>");

        }

        if (useTable) {

            write("</table>");

        }

    }

}

//

function StarBarLikeYou() {

    window.open(STARBAR_MLY_PAGE, 'MLYPoppage',

        'toolbars=0,scrollbars=0,location=0,statusbars=0,menubars=0,resizable=0,width=435,height=300');

    return false;

}