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;
}
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 OS_findObj(n, d) { //v4.01
	var p,i,x;  
		if(!d) d=document; 
		if((p=n.indexOf("?"))>0&&parent.frames.length) 
		{
			d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);
		}
		if(!(x=d[n])&&d.all) 
			
			x=d.all[n]; 
			
			for (i=0;!x&&i<d.forms.length;i++) 
				
				x=d.forms[i][n];
  				
				for(i=0;!x&&d.layers&&i<d.layers.length;i++) 
					
					x=OS_findObj(n,d.layers[i].document);
  				
				if(!x && d.getElementById) 
					
					x=d.getElementById(n); return x;
}

function OS_showHideLayers() { //v6.0
  var i,p,v,obj,args=OS_showHideLayers.arguments;
  
  	for (i=0; i<(args.length-2); i+=3) 
  	
		if ((obj=OS_findObj(args[i]))!=null) 
		{ 
		v=args[i+2];
    		if (obj.style) 
			{ 
			obj=obj.style; 
			v=(v=='show')?'visible':(v=='hide')?'hidden':v; 
			}
    	obj.visibility=v; 
		}
}