$(document).ready( function() {
	var active = $("ul#nav li.active");
	
	$("ul#nav").children("li").children("ul").hover(
		function() {
			$(this).parent("li").addClass("active");
			active.addClass("active");
		},
		
		function() {
			$(this).parent("li").removeClass("active");
			active.addClass("active");
		}
	);
	
	$("ul#nav").children("li").hover(
		function() {
			active.children("ul").hide();
			$(this).children("ul").show();
			$(this).addClass("active");
			active.addClass("active");
		},
		
		function() {
			$(this).children("ul").hide();
			active.children("ul").show();
			$(this).removeClass("active");
			active.addClass("active");
		}
	);

	$('a.calculator').click(function(){
		popup('webcalc/calculator.php','calculator',1024,800);

		return false;
	});

});

function popup(mypage,myname,w,h){
	winl = (screen.width-w)/2;
	wint = (screen.height-h)/2;
	settings='height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=yes,toolbar=no'
	window.open(mypage,myname,settings);
}