//centred popup window
var win=null;
function NewWindow(mypage,myname,w,h,scroll,pos){
if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}
settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
win=window.open(mypage,myname,settings);}

// expand + contract
function ExpCon(oid) {
	tochange = document.getElementById(oid);
	
	if(tochange.style.display == "block") {
		tochange.style.display = "none";
	} else {
		tochange.style.display = "block";
	}
}

// tree
var ns6=document.getElementById&&!document.all
var bV=parseInt(navigator.appVersion);
NS4=(document.layers) ? true : false;
IE4=((document.all)&&(bV>=4))?true:false;
ver4 = (NS4 || IE4) ? true : false;

function doExpand(el) { // IE only function.
	
	whichEl = eval("document.getElementById(\"" + el + "content\")");	
	whichIcon = eval("document.getElementById(\"" + el + "itemIcon\")");
	
	if (whichEl.style.display != "none") {
    whichEl.style.display = "none";
	 //whichIcon.src="/admin/images/bt_folder.gif";
	}
	else {
    whichEl.style.display = "inline";
 	 //whichIcon.src="/admin/images/bt_folder_open.gif";
	 }
    
}