function showmenu(id){
		
	if      (document.layers)         {
		 document.layers[id].visibility="visible";
		 document.layers["pic_"+id].visibility="visible";
		 document.layers["attr_"+id].visibility="visible";
		 document.layers["dcr_"+id].visibility="visible";
		 document.layers["unit_"+id].visibility="visible";
	}
    else if (document.getElementById) {
		 document.getElementById(id).style.visibility="visible";
		 document.getElementById("pic_"+id).style.visibility="visible";
		 document.getElementById("attr_"+id).style.visibility="visible";
		 document.getElementById("dcr_"+id).style.visibility="visible";
		 document.getElementById("unit_"+id).style.visibility="visible";
	}

}
function hidemenu(id){
	if      (document.layers)         {
		 document.layers[id].visibility="hidden"; 
		 document.layers["pic_"+id].visibility="hidden";
		 document.layers["attr_"+id].visibility="hidden";  
		 document.layers["dcr_"+id].visibility="hidden";  
		 document.layers["unit_"+id].visibility="hidden";                     
	}
    else if (document.getElementById) {
		document.getElementById(id).style.visibility="hidden";
		document.getElementById("pic_"+id).style.visibility="hidden";
		document.getElementById("attr_"+id).style.visibility="hidden";
		document.getElementById("dcr_"+id).style.visibility="hidden";
		document.getElementById("unit_"+id).style.visibility="hidden";
	}
	
	
    
}