[chipmunk]

ZmMailMsgView.prototype._createDisplayImageClickClosure =
function(msg, idoc, id, iframe) {
	var self = this;
	var func = function() {
		var images = idoc.getElementsByTagName("img");
		for (var i = 0; i < images.length; i++) {
			if (images[i].getAttribute("dfsrc")) {
				// If we just loop through the images, IE for some reason,
				// doesn't fetch the image. By launching them off in the
				// background we seem to kick IE's engine a bit.
				if (AjxEnv.isIE) {
					var args = [images[i], i, images.length, msg, idoc, iframe, self];
					var act = new AjxTimedAction(null, ZmMailMsgView._swapIdAndSrc, args);
					AjxTimedAction.scheduleAction(act, 0);
				} else {
					images[i].src = images[i].getAttribute("dfsrc");
				}
			}
		}
		diEl = document.getElementById(id);
		if (diEl)
			diEl.style.display = "none";
		this._htmlBody = idoc.documentElement.innerHTML;
		if (!AjxEnv.isIE) {
			self._resetIframeHeightOnTimer(iframe);
		}

		ZmMailMsgView._resetIframeHeight(self, iframe);
	----->msg.setHtmlContent(this._htmlBody);
		msg.showImages = true;
	};
	return func;
};

the error console of firefox showed me this line...

Dont know if it 's what you need...

I stay open to find the right part of code if you need!