function toggleBox(divOn,NumTabs) 
   {
   var tabNum = NumTabs;
   for(i=1;i<tabNum;i++){
	document.getElementById('content-tab-'+i).style.display = "none";
	document.getElementById('header-tab-'+i).className="tab-off";
	}
   document.getElementById('content-tab-'+divOn).style.display = "block";
   document.getElementById('header-tab-'+divOn).className="tab-on";
   }