.txt_tip 
{ 
	border-style:solid; 
	border-width:1px; 
	border-color:#000033; 
	background-color:#E5E8ED;
	padding:2px;
	
	position:absolute;
	z-index:20000;/*any value*/
	overflow:hidden;/*must have*/
	width:33em;/*must have for any value*/
}

.txt_tip iframe
{
	display:none;/*sorry for IE5*/
	display/**/:block;/*sorry for IE5*/
	position:absolute;/*must have*/
	top:0;/*must have*/
	left:0;/*must have*/
	z-index:-1;/*must have*/
	filter:mask();/*must have*/
	width:3000px;/*must have for any big value*/
	height:3000px/*must have for any big value*/;
}

.txt_tip a
{
	font-family:Arial;
	font-size:10px;
}