//SETTING UP OUR POPUP
//0 means disabled; 1 means enabled;
var popupStatus = 0;

//loading popup with jQuery magic!
function loadPopup(){
	//loads popup only if it is disabled
	if(popupStatus==0){
		$("#backgroundInfoBox").css({
			"opacity": "0.4"
		});
		$("#backgroundInfoBox").fadeIn("slow");
		$("#InfoBox").fadeIn("slow");
		popupStatus = 1;
	}
}

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

//centering popup
function centerPopup(){
	//request data for centering
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#InfoBox").height();
	var popupWidth = $("#InfoBox").width();
	//centering
	$("#InfoBox").css({
		"position": "absolute",
		"top": 150,
		"left": windowWidth/2-popupWidth/2
		/*"top": windowHeight/2-popupHeight/1.2,
		"left": windowWidth/2-popupWidth/2*/
	});
	//only need force for IE6
	
	$("#backgroundInfoBox").css({
		"height": windowHeight
	});
	
}

//CONTROLLING EVENTS IN jQuery
$(document).ready(function(){
	
	//LOADING POPUP
	//Click the button event!
	$("#button").click(function(){
		//centering with css
		centerPopup();
		//load popup
		loadPopup();
	});			
	//CLOSING POPUP
	//Click the x event!
	$("#InfoBoxClose").click(function(){
		disablePopup();
	});
	//Click out event!
	$("#backgroundInfoBox").click(function(){
		disablePopup();
	});
	//Press Escape event!
	$(document).keypress(function(e){
		if(e.keyCode==27 && popupStatus==1){
			disablePopup();
		}
	});
});