var popupStatus = 0;

function loadPopup(){
	if(popupStatus==0){
		$("#backgroundPopup").css({
			"opacity": "0.6"
		});
		$("#backgroundPopup").fadeIn("slow");
		$("#panel").fadeIn("slow");
		$(".content").fadeIn("slow");
		popupStatus = 1;
	}
}

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


function centerPopup(){
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#panel").height();
	var popupWidth = $("#panel").width();
	$("#panel").css({
		"position": "absolute",
		"top": windowHeight/2-popupHeight/2,
		"left": windowWidth/2-popupWidth/2
	});
	
	$("#backgroundPopup").css({
		"height": windowHeight
	});
	
}


$(document).ready(function() {
		
	// Expand Panel
	$("#open").click(function(){	
		centerPopup();
		loadPopup();
	});	
	
	// Collapse Panel
	$("#close").click(function(){
		disablePopup();
	});		
	
	$("#backgroundPopup").click(function(){
		disablePopup();
		$("#toggle a").toggle();
	});
	
	// Switch buttons from "Log In | Register" to "Close Panel" on click
	$("#toggle a").click(function () {
		$("#toggle a").toggle();
	});		
			
});