function openPopupWindow(url, width, height) {
		newWindow = window.open(url,'_popup','width='+width+',height='+height+',scrollbars=yes,resizable=no,menubar=no,toolbar=no,directories=no,location=no,status=yes');
		newWindow.focus();
	}
	
	function choose_select_list(element){
		var value = element.options[element.selectedIndex].value;
		parent.location = value;
	}