var timerlen = 5;
var slideAniLen = 250;

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 hideMenuDivs(seek){
    var containerDiv = document.getElementById('divMenu');
    var divs = containerDiv.getElementsByTagName('div'); 
    for(i=0; i < divs.length; i++)
    { 
        if(divs[i].id.match(seek))
        {   //if they are 'see' divs 
            if (divs[i].style.display=="block")
            {
                var divName = divs[i].id;
                divs[i].style.display="none";
                //slideup(divName);
            }  
        } 
    }     
}



function slidedown(objname){

    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";
    startslide(objname);
}


function toggleSlide(objname){
   if(document.getElementById(objname).style.display == "none"){
         // div is hidden, so let's slide down
         slidedown(objname);
       }else{
         // div is not hidden, so slide up
        slideup(objname);
       }
    }



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

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

    obj[objname].style.display = "block";
    startTime[objname] = (new Date()).getTime();
    endHeight[objname] = obj[objname].scrollHeight;

    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;
}