text: 
  	function SplitScreen (nonScrollingRegionId, scrollingRegionId) {
  
  		// store references to the two regions
  		this.nonScrollingRegion = document.getElementById(nonScrollingRegionId);
  		this.scrollingRegion = document.getElementById(scrollingRegionId);
  
          // set the position model for each region
  		this.nonScrollingRegion.style.position = "fixed";
  		this.scrollingRegion.style.position = "absolute";
  
  		// 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) {
  
  		if(navigator.userAgent.indexOf("Firefox")==-1)
    		{	
  			var height = document.body.clientHeight - this.nonScrollingRegion.offsetHeight;
  
  			if(height > 0) this.scrollingRegion.style.height = height + "px";
  			else this.scrollingRegion.style.height = 0 + "px";
  
  			this.scrollingRegion.style.width = document.body.clientWidth + "px";
  		}
  
  	
          // update the vertical offset of the scrolling region to account for the height of the non-scrolling region
          this.scrollingRegion.style.top = this.nonScrollingRegion.offsetHeight + "px";
  	}
  