var ie = (document.all) ? true : false;
function hideID(objID){
	var element = (ie) ? document.all(objID) : document.getElementById(objID);
	element.style.display="none"
}
function showID(objID){
	var element = (ie) ? document.all(objID) : document.getElementById(objID);
    element.style.display="block"
}

var Lst;

var cats,multi,pdf;

function CngClass(cls){
 this.lst=null;
 this.cls=cls;
}

CngClass.prototype.CngClass=function(obj){
 if (typeof(obj)=='string') obj=document.getElementById(obj);
 if (this.lst) this.lst.className='';
 obj.className=this.cls;
 this.lst=obj;


}