function startList() {
if (document.all&&document.getElementById) {
navRoot = document.getElementById("nav");
for (i=0; i<navRoot.childNodes.length; i++) {
node = navRoot.childNodes[i];
if (node.nodeName=="LI") {
node.onmouseover=function() {
this.className+=" over";
  }
  node.onmouseout=function() {
  this.className=this.className.replace(" over", "");
   }
   }
  }
 }
}




		function popup(url,w,h) { 
		
		x4 = screen.width/2 - (1000);
		//this centres horizontally
		//y4 = screen.height/2 - (h/2);
		y4 = 0;
		window.open(url,'','height=' + h + ',width=' + w +',scrollbars=1,resizable=0,menubar=0,toolbar=0,status=0,location=0,directories=0,left='+ x4 + ',top=' + y4 + '');

	}