var win = null;
				function showIndex(file, xwidth, yheight) {
					if(win != null){
						win = window.open(file,'Win','resizable=yes,scrollbars=no,width='+xwidth+',height='+yheight+',status=no,location=no,toolbar=no');
						win.focus();
					}
					else
						win = window.open(file,'Win','resizable=yes,scrollbars=no,width='+xwidth+',height='+yheight+',status=no,location=no,toolbar=no');
				}