/* ---------------------------- */
/* SHOW-HIDE Layer				*/
/* ---------------------------- */
function showlayer(layer){
	var myLayer=document.getElementById(layer).style.display;
	if(myLayer=="none"){
		document.getElementById(layer).style.display="block";
		document.getElementById('tab_005').className="table_listingactive";
	} else { 
		document.getElementById(layer).style.display="none";
		document.getElementById('tab_005').className="table_listing";
		}
}