var h=0;
var hid=new Array();
var menu_h=23;
var step=5.75;
var interval=10;

<!--
var browser = new BrowserDetector();
if(browser.nn4|browser.ie4) window.location.href="error.html"

function hide(ID)
{
   document.all[ID].style.visibility="hidden";
}                  
  
function clear_all_plus()
{
    var len=hid.length;
    for(i=len-2;i>=0;i--) hide(hid[i]);
}
  
function clear_all()
{
    var len=hid.length;
    for(i=len-1;i>=0;i--) hide(hid[i]);
    hid=new Array();
	h=0;
}
	
function menu(obj,num)
{
		 var ID=obj.id;
         var divID="div"+ID.substring(4);
		 
		 if(document.all[divID].style.visibility=="hidden")
		 {
		    clear_all();
		    document.all[divID].style.visibility="visible";
			document.all[divID].style.clip="rect(0,200,0,0)";
	        hid.push(divID)
			down(divID,num);
		 }
		 else clear_all_plus();
}
    
function down(ID,num)
{
	if(document.all[ID].style.visibility=="visible")
	{
	    var maxh=num*menu_h;
	    if(h!=maxh)
	    {
	       h+=step;
		   document.all[ID].style.clip="rect(0,200,"+h+",0)";
		   setTimeout("down(\""+ID+"\","+num+")",interval);
	    }
	}
}
// -->