function SplitScreen (nonScrollingRegionId, scrollingRegionId) {
	if (navigator.appName!="Microsoft Internet Explorer"){
		return;
}
	// store references to the two regions
	this.nonScrollingRegion = document.getElementById(nonScrollingRegionId);
	this.scrollingRegion = document.getElementById(scrollingRegionId);

	// set the scrolling settings
	document.body.style.margin = "0px";
	document.body.style.overflow = "hidden";
	this.scrollingRegion.style.overflow = "auto";

	// fix the size of the scrolling region
	this.resize(null);

	// add an event handler to resize the scrolling region when the window is resized	
	registerEventHandler(window, 'resize', getInstanceDelegate(this, "resize"));
}

	SplitScreen.prototype.resize = function(e) {
		var scrollingRegionHeight = document.body.clientHeight - this.nonScrollingRegion.offsetHeight;

		this.scrollingRegion.style.height = (scrollingRegionHeight > 0) ? scrollingRegionHeight : document.body.clientHeight;
		this.scrollingRegion.style.width = document.body.clientWidth;
}