function ifwChangeHeight(iframewidgetname) {
	var thisifw = document.getElementById(iframewidgetname);
	if (thisifw.document && thisifw.document.body.scrollHeight && window.opera) { // for Opera (IE doesn't work properly)
		thisifw.height = thisifw.document.body.scrollHeight;
		return;
	}
	if (thisifw.contentDocument && thisifw.contentDocument.body.offsetHeight) { // for Firefox and Safari (Opera doesn't work properly)
		thisifw.height = thisifw.contentDocument.body.offsetHeight;
		return;
	}
	if (thisifw.Document && thisifw.Document.body.scrollHeight) { // for IE (Opera doesn't work properly)
		thisifw.height = thisifw.Document.body.scrollHeight;
	}
}