var popupStatus = 0;
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
		}
	);	
	$("#backgroundPopup").css
	(
		{
			"height": windowHeight
		}
	);
}
$(document).ready(function()
{
	$("#button").click(function()
	{
		centerPopup();
		loadPopup();
	});
	$("#popupContactClose").click(function(){
		disablePopup();
	});
	$("#backgroundPopup").click(function(){
		disablePopup();
	});
	$(document).keypress(function(e){
		if(e.keyCode==27 && popupStatus==1){
			disablePopup();
		}
	});
});