function getLayer(layerName)
{

 return (document.all) ? document.all[layerName].style :
        (document.layers) ? document.layers[layerName] :
        document.getElementById(layerName);
}
function toggleLayer(layerName)
{
 with (getLayer(layerName)){
 	if (document.all)
	  display = (display == "none") ? "block" : "none";
	else
	  style.display = (style.display == "none") ? "block" : "none";
  }
}
function show(layerName)
{
 with (getLayer(layerName)){
 	if (document.all)
	  display =  "block";
	else
	  style.display =  "block";
  }
}
function hide(layerName)
{
 with (getLayer(layerName)){
 	if (document.all)
	  display =  "none";
	else
	  style.display =  "none";
  }
}
function MM_preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
   var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
   if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}