iframe operation
<iframe id="myFrame" frameborder="0" vspace="0" hspace="0" marginwidth="0" marginheight="0" width="100%" src="external.html" scrolling="no" style="overflow:visible"></iframe>----------function adjustIFrameSize(id) 
{
var myIframe = document.getElementById(id);
if (myIframe) { if (myIframe .contentDocument && myIframe.contentDocument.body.offsetHeight) { // W3C DOM (and Mozilla) syntax myIframe.height = myIframe.contentDocument.body.offsetHeight; } else if (myIframe.Document && myIframe.Document.body.scrollHeight) { // IE DOM syntax myIframe.height = myIframe.Document.body.scrollHeight;
} }
}----------<body onload = "adjustIFrameSize('myFrame');">----------function adjustIFrameSize(id) { var myIframe = document.getElementById(id); if (myIframe) { if (myIframe.contentDocument && myIframe.contentDocument.body.offsetHeight) { // W3C DOM (and Mozilla) syntax myIframe.height = myIframe.contentDocument.body.offsetHeight; } else if (myIframe.Document && myIframe.Document.body.scrollHeight) { // IE DOM syntax myIframe.height = myIframe.Document.body.scrollHeight; } // bind onload events to iframe if (myIframe.addEventListener) { myIframe.addEventListener("load", resizeIframe, false); } else { myIframe.attachEvent("onload", resizeIframe); } }}function resizeIframe(evt) { evt = (evt) ? evt : event; var target = (evt.target) ? evt.target : evt.srcElement; // take care of W3C event processing from iframe's root document if (target.nodeType == 9) { if (evt.currentTarget && evt.currentTarget.tagName.toLowerCase() == "iframe") { target = evt.currentTarget; } } if (target) { adjustIFrameSize(target.id); }}
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