var popupStatus = 0;


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

function disablePopup(){
	if(popupStatus==1){
		$("#backgroundPopup").fadeOut("slow");
		$("#popupSize").fadeOut("slow");
		$("#popupColl").fadeOut("slow");
		$(".visible").attr("class", "invisible");
		popupStatus = 0;
	}
}
function centerPopup(){
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#popupSize").height();
	var popupWidth = $("#popupSize").width();
	$("#popupSize").css({
		"position": "absolute",
		"top": windowHeight/2-popupHeight/2,
		"left": windowWidth/2-popupWidth/2
	});
	$("#backgroundPopup").css({
		"height": windowHeight
	});
	
}

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

});