function toggleCategory(categoryId){
    var cat = document.getElementById("cat_" + categoryId);
    var img  = document.getElementById("img_" + categoryId);
    if(cat.className == "pcat_hidden"){
        cat.className = "pcat_visible";
        img.src = "/images/minus.png";
    }
    else{
        cat.className = "pcat_hidden";
        img.src = "/images/plus.png";
    }

}

// Script Source: CodeLifter.com
// Copyright 2003
// Do not remove this notice.

// SETUPS:
// ===============================

// Set the horizontal and vertical position for the popup

PositionX = 100;
PositionY = 100;

// Set these value approximately 20 pixels greater than the
// size of the largest image to be used (needed for Netscape)

defaultWidth  = 500;
defaultHeight = 500;

// Set autoclose true to have the window close automatically
// Set autoclose false to allow multiple popup windows

var AutoClose = true;

// Do not edit below this line...
// ================================
if (parseInt(navigator.appVersion.charAt(0))>=4){
    var isNN=(navigator.appName=="Netscape")?1:0;
    var isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;
}
var optNN='scrollbars=no,width='+defaultWidth+',height='+defaultHeight+',left='+PositionX+',top='+PositionY;
var optIE='scrollbars=no,width=150,height=100,left='+PositionX+',top='+PositionY;
function popImage(imageURL,imageTitle) {
    if (isNN){
        imgWin=window.open('about:blank','',optNN);
    }
    if (isIE){
        imgWin=window.open('about:blank','',optIE);
    }
    with (imgWin.document){
        writeln('<html><head><title>Loading...</title><style>body{margin:0px;}</style>');
        writeln('<sc'+'ript>');
        writeln('var isNN,isIE;');
        writeln('if (parseInt(navigator.appVersion.charAt(0))>=4){');
        writeln('isNN=(navigator.appName=="Netscape")?1:0;');
        writeln('isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}');
        writeln('function reSizeToImage(){');
        writeln('if (isIE){');
        writeln('window.resizeTo(300,300);');
        writeln('width=300-(document.body.clientWidth-document.images[0].width);');
        writeln('height=300-(document.body.clientHeight-document.images[0].height);');
        writeln('window.resizeTo(width,height);}');
        writeln('if (isNN){');
        writeln('window.innerWidth=document.images["George"].width;');
        writeln('window.innerHeight=document.images["George"].height;}}');
        writeln('function doTitle(){document.title="' + imageTitle + '";}');
        writeln('</sc'+'ript>');
        if (!AutoClose) writeln('</head><body bgcolor=000000 scroll="no" onload="reSizeToImage();doTitle();self.focus()">')
        else writeln('</head><body bgcolor=000000 scroll="no" onload="reSizeToImage();doTitle();self.focus()" onblur="">');
        writeln('<img name="George" src=' + imageURL + ' style="display:block"></body></html>');
        close();
        }
    }

