var current_id="default";
function ShowItem(id){
	var prev_obj = document.getElementById("item_" + current_id);
	var obj = document.getElementById("item_" + id);
	if(prev_obj){
		prev_obj.style.display = "none";
	}
	document.getElementById("tab_" + current_id).className = "tab_unselect";
	if(obj){
		obj.style.display = "block";
		current_id = id;
	}
	document.getElementById("tab_" + id).className = "tab_select";
}

function wopen(url,name, w, h)
{
 var win = window.open(url,name,"width="+w,"height="+h,"location=no, menubar=no,status=no,toolbar=no,scrollbars=no,resizable=no");
 win.resizeTo(w, h);
 win.focus();
}