function expand_item(id,id1){
	for (var i=0; i<6; i++) {
	document.getElementById("select"+i).style.display = "none";
	}

	if (id!='') {
		var item = document.getElementById("cat"+id);
		var target=item.parentNode.getElementsByTagName("SPAN")[0];
		var parent = item.parentNode.parentNode;
		parent.style.display = "block";
		var tmp = new String(parent.id);
		tmp = tmp.substring(6,tmp.length);		
		if(target.display==null || target.display){
			tf(target);
		}
		select(tmp);
		toggleOptionMenu();
	} else {
		var item = document.getElementById("cat"+id1);
		var target=item.parentNode.getElementsByTagName("SPAN")[0];
		var parent = item.parentNode.parentNode;
		parent.style.display = "block";
	}

	
}

function toggleOptionMenu(){
	var a = document.getElementById("optionMenu") ;
	var visible = a.visible==null || a.visible ? true:false;
	a.visible = !visible;
	a.style.display = visible?"block":"none";
	
}
function select(index){
	var a = document.getElementById("select"+index) ;	
	var b = document.getElementById("ordertype");
	var labels = new Array(3);
	labels[0] = "Artists";
	labels[1] = "Artists";
	labels[2] = "Artists";
	labels[3] = "Publication Titles";
	labels[4] = "Publication Titles";
	labels[5] = "Publication Titles";
	for(var i=0;i<6;i++){
		document.getElementById("select"+i).style.display="none";
		if(index==i){
			b.innerHTML=labels[i];
		}
	}
	a.style.display="block";
	toggleOptionMenu();
}