// this is used by the spotlight on specialties section to hide and show the description div tag
function toggleLayer( whichLayer )
{  
	var elem, vis; 
	if( document.getElementById )
		// this is the way the standards work  
		elem = document.getElementById( whichLayer );  
	else if( document.all ) 
		// this is the way old msie versions work     
		elem = document.all[whichLayer];  
	else if( document.layers ) 
		// this is the way nn4 works   
		elem = document.layers[whichLayer];  
		vis = elem.style; 
	// if the style.display value is blank we try to figure it out here 

	if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)   
		vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';  
	vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}