html{
	overflow:hidden;
}
iframe{	
	position:absolute;
	border:0;
	overflow:hidden;
}	
#head{	
	top:0;
	width:100%;
	height:30px;
	left:0;
}	
#main{	
	top:30px;
	width:100%;
	height:96%;
	left:0;
}	
#top{	
	top:0;
	width:100%;
	height:230px;
	left:-8px;
}	
#bottom{	
	top:230px;
	width:100%;
	height:calc(100% - 230px );
	left:0;
}