var popupStatus = 0;

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

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

//centering popup
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(){

	$("#contactButton").click(function(){centerPopup();loadPopup();});
	$("#popupContactClose").click(function(){disablePopup();});
	$("#backgroundPopup").click(function(){disablePopup();});
	$(document).keypress(function(e){if(e.keyCode==27 & popupStatus==1){disablePopup();}});

});