// xhtml strict compliant way of opening links in new browser windows
function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}
window.onload = externalLinks;

// Popup	
var popupStatus = 0;	// disabled to start

function loadPopup()
{
	if(popupStatus==0)
	{
		$("#backgroundPopup").css({"opacity": "0.7"});
		$("#backgroundPopup").fadeIn("slow");
		$("#popupContact").fadeIn("slow");
		popupStatus = 1;
	}
}

function disablePopup()
{
	if(popupStatus==1)
	{
		$("#backgroundPopup").fadeOut("slow");
		$("#popupContact").fadeOut("slow");
		popupStatus = 0;
	}
}

function centerPopup()
{
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#popupContact").height();
	var popupWidth = $("#popupContact").width();

	$("#popupContact").css({
		"position": "absolute",
		"top": windowHeight/2-popupHeight/2,
		"left": windowWidth/2-popupWidth/2
	});
	//only need force for IE6
	$("#backgroundPopup").css({
		"height": windowHeight
	});
}

$(document).ready(function()
{
	$("#resources").click(function(){
		centerPopup();
		loadPopup();
	});

	$("#popupContactClose").click(function(){
		disablePopup();
	});

	$("#backgroundPopup").click(function(){
		disablePopup();
	});

	$(document).keypress(function(e){
		if(e.keyCode==27 && popupStatus==1){disablePopup();}
	});
});