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 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;
}