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 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 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;
}

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

function setDiv(objname){
  if(document.getElementById(objname).style.display == "none"){  
    document.getElementById('mydiv1').style.display = "none";
    document.getElementById('mydiv2').style.display = "none";
    document.getElementById('mydiv3').style.display = "none";
    document.getElementById('mydiv4').style.display = "none";
    document.getElementById('mydiv5').style.display = "none";
    document.getElementById(objname).style.display = "block";
  }
}