function iFrameHeight() 
   {
			var h=0;
			if (!document.all) 
			   {
				 		h=document.getElementById('blockrandom').contentDocument.height;
						document.getElementById('blockrandom').style.height=h+60+'px';
			   } 
			else if( document.all ) 
			   {
				    h = document.frames('blockrandom').document.body.scrollHeight;
				    document.all.blockrandom.style.height=h+20+'px';
			    }
		}