var timerlen = 5;
var slideAniLen = 200;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function slidedown(objname){
//debugger;
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display != "none")
                return; // cannot slide down something that is already visible

        moving[objname] = true;
        dir[objname] = "down";
        
        startslide(objname);
}

function slideup(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display == "none")
                return; // cannot slide up something that is already hidden

        moving[objname] = true;
        dir[objname] = "up";
        slideupAllRemainingDivs(objname);
        startslide(objname);
}

function startslide(objname){
        obj[objname] = document.getElementById(objname);

        endHeight[objname] = parseInt(obj[objname].style.height);
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
                obj[objname].style.height = "1px";
        }

        obj[objname].style.display = "block";

        timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}

function slidetick(objname){
        var elapsed = (new Date()).getTime() - startTime[objname];

        if (elapsed > slideAniLen)
                endSlide(objname)
        else {
                var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
                if(dir[objname] == "up")
                        d = endHeight[objname] - d;

                obj[objname].style.height = d + "px";
        }

        return;
}

function endSlide(objname){
        clearInterval(timerID[objname]);

        if(dir[objname] == "up")
                obj[objname].style.display = "none";

        obj[objname].style.height = endHeight[objname] + "px";

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}

function slideupAllRemainingDivs(divId)
{
    
    //datalist = document.getElementById('ctl00_ContentPlaceHolder1_StartScreen1_MyDataList');
    for(i=0;i<33;i++)
    {
        //var controlId = new String(document.form1.elements[i].name);
        halfName1 = divId.substr(0,divId.lastIndexOf('_catimage'))
        halfName2 = halfName1.substr(0,halfName1.lastIndexOf('_'))
        if(i < 10)
        {
            count = '0'+i;
        }
        else
        {
            count = i;
        }
        
        newDiv = halfName2 + '_ctl' + count + '_catimage';
        if(newDiv!=divId)
        {
        //if( document.getElementById(newDiv))
        //{
            targetControl = document.getElementById(newDiv);
            if(targetControl != null )
            {
                slideup(newDiv);
                //debugger;
            }
            }
        //}
    }
}