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';
			}
		}