$ = function(id) {
			return document.getElementById(id);
		}
		
		function ShowMe(ElementId)
		{
		    $(ElementId).style.visibility = 'visible';
		    $(ElementId).style.display = '';
		}
		
		function HideMe(ElementId)
		{
		    $(ElementId).style.visibility = 'hidden';
		    $(ElementId).style.display = 'none';
		}

		function ShowMask() {
		    ShowMe('Loading');
		    var loadingModal = ModalPopup('Loading');
		    loadingModal.Show();
		}
		
		function findPos(obj) {
		    var curleft = curtop = 0;
		    if (obj.offsetParent) {
		        do {
		            curleft += obj.offsetLeft;
		            curtop += obj.offsetTop;
		        } while (obj = obj.offsetParent);
		        return [curleft, curtop];
		    }
		}