//Statut de la popup
var popupStatus = 0;


$(document).ready(function() {
	var divName = 'div_panier';
	var backDivName = 'back_div_panier';
	
	//Si le conteneur est rempli, affichage de la popup
	if ($('#'+divName).attr('innerHTML') != '')
	{
		centerPopup(divName, backDivName);
		loadPopup(divName, backDivName);
	}

	//Fermeture
	//Click sur le bouton X
	$("#popupClose").click(function(){
		disablePopup(divName, backDivName);
	});
	//Click à l'extérieur de la popup
	$("#"+backDivName).click(function(){
		disablePopup(divName, backDivName);
	});
	
	//Touche échap!
	$(document).keypress(function(e){
		if(e.keyCode==27 && popupStatus==1){
			disablePopup(divName, backDivName);
		}
	});
	
		
});

//Chargement de la popup
function loadPopup(divName, backDivName){
	//Uniquement si elle ne l'est pas déja
	if(popupStatus==0){
		$("#"+backDivName).css({
			"opacity": "0.4"
		});
		$("#"+backDivName).fadeIn("slow");
		$("#"+divName).fadeIn("slow");
		popupStatus = 1;
	}
}

//Fermeture de la popup
function disablePopup(divName, backDivName){
	//Fermeture uniquement si elle est ouverte
	if(popupStatus==1){
		$("#"+backDivName).fadeOut("slow");
		$("#"+divName).fadeOut("slow");
		popupStatus = 0;
	}
}

//Centrage dans la page
function centerPopup(divName, backDivName){
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#"+divName).height();
	var popupWidth = $("#"+divName).width();
	
	$("#"+divName).css({
		"position": "absolute",
		"top": windowHeight/2-popupHeight/2,
		"left": windowWidth/2-popupWidth/2
	});

	$("#"+backDivName).css({
		"height": windowHeight,
		"width": windowWidth
	});
}