//0 means disabled; 1 means enabled;
var popupStatus = 0;

//loading popup with jQuery
function loadPopup(){
	//loads popup only if it is disabled
	if(popupStatus==0){
		$("#background_area").css({
			"opacity": "0.1"
		});
		
		//display the div
		$("#background_area").fadeIn(200);
		$("#popup_cart").fadeIn(200);

		var random_var = Rand();
		var url = 'http://www.elightbulbs.com/application_header_cart_contents.cfm?r=' + random_var;
		$.get(url, function(data){
			//insert coldfusion page results into div
			$('#popup_cart').html(data)

			popupStatus = 1;	
			//CLOSING POPUP
			//Click the x event!			
			$("#popup_cart_close").click(function(){
				disablePopup();
			});					
		});
		
	}
}

//create random string
function Rand(){
	var ret = '';
	var alphanum = 'abcdefghijklmnopqrstuvqxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01293456789';
	for (var i = 0; i < 5; i++){
		var num = Math.floor(Math.random()*alphanum.length);
		ret = ret + alphanum.substr(num,1);
	}
	return ret;
}

//disabling popup with jQuery magic!
function disablePopup(){
	//disables popup only if it is enabled
	if(popupStatus==1){
		$("#background_area").fadeOut(200);	
		$("#popup_cart").fadeOut(200);
		popupStatus = 0;
	}
}

//centering popup
function positionPopup(){
	//request data for centering
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;	
	var popupHeight = $("#popup_cart").height();
	var popupWidth = $("#popup_cart").width();
	//centering

	//define location of cart_button
	var position = $("#cart_button").position();
	
	$("#popup_cart").css({
		"position": "absolute",
		"top": position.top + 26,
		"left": position.left - popupWidth + 65
	});
	//only need force for IE6

	$("#background_area").css({
		"height": windowHeight
	});	
	
}

//CONTROLLING EVENTS IN jQuery
$(document).ready(function(){
	
	//LOADING POPUP
	//Mouse over the cart_button
	$("#cart_button").click(function(){
		//position with css
		positionPopup();
		//load popup
		loadPopup();
	});
	
	//Click out event!
	$("#background_area").click(function(){
		disablePopup();
	});
	//Press Escape event!
	$(document).keypress(function(e){
		if(e.keyCode==27 && popupStatus==1){
			disablePopup();
		}
	});
				
});