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


//loading popup with jQuery magic!
function loadPopup()
{
	//loads popup only if it is disabled
	if(popupStatus==0)
	{
		backpop.css({"opacity": "0.5"});
		popup.css({"opacity": "1"});
		backpop.fadeIn("slow");
		popup.fadeIn("slow");
		popupStatus = 1;
	}
}

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

//centering popup
function centerPopup()
{
	//request data for centering
	var windowWidth = document.body.clientWidth;
	var windowHeight = document.body.clientHeight;
	var popupHeight = popup.height();
	var popupWidth = popup.width();
	
	//centering
	popup.css(
	{
		"position": "absolute",
		"top": windowHeight/2-popupHeight/2,
		"left": windowWidth/2-popupWidth/2
	});
	
	//only need force for IE6
	backpop.css({"height": windowHeight});
	if($.browser.msie)
	{
		backpop.css({"position": "absolute"});
	}
	//alert(document.body.clientWidth);
}

$(document).ready(function()
{
	popup = $("#popupAlerte");
	backpop = $("#backgroundPopup");
	
	if(popup.length)
	{
		centerPopup();
		loadPopup();
	}
	else
	{
		backpop.hide();
		return;
	}
	
	$("#popupClose").click(function(e)
	{
		disablePopup();
		e.preventDefault();
	});
	
	//Click out event!
	backpop.click(function()
	{
		disablePopup();
	});
	
	//Press Escape event!
	$(document).keypress(function(e)
	{
		if(e.keyCode==27 && popupStatus == 1)
		{
			disablePopup();
		}
	});

});