function resizeIframe(mainframe) { 
if(self==parent) return false; /* Checks that page is in iframe. */ 
else if(document.getElementById&&document.all) /* Sniffs for IE5+.*/ 

var FramePageHeight = framePage.scrollHeight + 10; /* framePage 
is the ID of the framed page's BODY tag. The added 10 pixels prevent an 
unnecessary scrollbar. */ 

parent.document.getElementById(mainframe).style.height=FramePageHeight; 
/* "iframeID" is the ID of the inline frame in the parent page. */ 
}