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