function hidelayer(element,flgshow)
{
 switch (flgshow) {
   case 1:   
      if (document.getElementById || document.all)  {
         document.getElementById(element).style.visibility = "visible";     
         break;    
         }      
      
   case 0:   
      if (document.getElementById || document.all)  {
         document.getElementById(element).style.visibility = "hidden";    
         break;     
         }       
   }
}

function ShowTeaser(el) {
	var contentDivId = 'content' + el.name;
	var contentDiv = new getObj(contentDivId);
        var subDivId = 'sub'+el.name;
	var subDiv = new getObj(subDivId);

	if (subDiv.style.display=="none" ) {		
		subDiv.style.display = "block";		
		contentDiv.obj.className="content-overlay-block";
	} else {
		subDiv.style.display = "none";
		contentDiv.obj.className="content-overlay-none";
	}	
}

function getObj(name)
{
  if (document.getElementById)
  {
    this.obj = document.getElementById(name);
    this.style = document.getElementById(name).style;
  }
  else if (document.all)
  {
    this.obj = document.all[name];
	this.style = document.all[name].style;
  }
  else if (document.layers)
  {
   	this.obj = document.layers[name];
   	this.style = document.layers[name];
  }
}