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'; 
	} 
    }