// navigation rollover functions
	function navOn(which){
		document.images[which].src = nav_ar[which]['on'].src;
	}
	
	function navOut(which){
		document.images[which].src = nav_ar[which]['off'].src;
	}


// load navigation page rollovers
	function navRO(){
		nav_ar = new Array();
		for (var i=0;i<arguments.length;i++){
			nav_ar[arguments[i]] = new Array();
			nav_ar[arguments[i]]['off']=new Image();
			nav_ar[arguments[i]]['on']=new Image();
			nav_ar[arguments[i]]['off'].src="uploads/images/structure/nav-"+arguments[i]+".gif";
			nav_ar[arguments[i]]['on'].src="uploads/images/structure/nav-"+arguments[i]+"-ro.gif";
		}
	}
	
	navRO("home","about","artists","partners","videos","buyonline","buylocal");
	

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';
}