Problems with getURL in IE

I just was notified by a web viewer using Internet Explorer that some of my site functionality is no longer working properly in their browser. I have looked into the problem, and found that in IE (both Windows and Mac), my getURL functions don’t work.
On an actions layer, here is an exerpt of my code:

//-----------------------------
buttonAll.onRelease = function() {
	switch (p) {
	case 1 :
  		getURL("http://www.page.com/001.aspx");
		getURL("javascript:urchinTracker('/default/teaser/img001');"); 
		break;
	case 2 :
		getURL("http://www.page.com/002.aspx");
		getURL("javascript:urchinTracker('/default/teaser/img002');"); 
		break;
	case 3 :
		getURL("http://www.page.com/003.aspx");
		getURL("javascript:urchinTracker('/default/teaser/img003);");
		break;
	}
};
//------------------------------

Depending on the frame of the inner movie clip, the button goes to different html pages. This has always worked before, but perhaps now needs a workaround due to recent IE updates. Any suggestions?

A secondary problem i might also mention, has recently caused troubles in IE as well. I have an image on a page with a javascript link to open a swf file in a new window. This works fine in Firefox, but comes up with a page not found in IE, where it had previously worked.

<a onclick="popup = window.open('http://www.page.com/flash001.swf', ' ', 'height=480,width=650,scrollbars=0,resizable=0'); return false" href="http://www.page.com/flash001.swf" target="_blank"><img src="/files/Images/Features/Journeys/Story_Image/flashimglink.jpg" border="0"></a>