/***************************/
//@Author: Adrian "yEnS" Mato Gondelle
//@website: www.yensdesign.com
//@email: yensamg@gmail.com
//@license: Feel free to use it, but keep this credits please!					
/***************************/

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

//loading popup with jQuery
function loadPopup(num){
	//loads popup only if it is disabled
	if(popupStatus==0){
		$("#backgroundPopup").css({
			"opacity": "0.7"
		});
		$("#backgroundPopup").fadeIn("slow");
		$("#"+num).fadeIn("fast");
		popupStatus = 1;
	}
}

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

//centering popup
function centerPopup(num){
	//request data for centering
	
	var scrollTop = $(window).scrollTop();
	var windowWidth = $(window).width();
	var windowHeight = $(window).height();
	var popupHeight = $("#"+num).height();
	var popupWidth = $("#"+num).width();
	//centering
	$("#"+num).css({
		"position": "absolute",
		"top": scrollTop+windowHeight/2-popupHeight/2,
		"left": windowWidth/2-popupWidth/2
	});
	//only need force for IE6
	
	$("#backgroundPopup").css({
		"height": windowHeight
	});
	
}


//CONTROLLING EVENTS IN jQuery
$(document).ready(function(){
	
	//LOADING POPUP
	//Click the button event!
	$(".preview").click(function(){
		var arrayOfClasses = this.className.split(' '); 
		var num = arrayOfClasses[1];
		//centering with css
		centerPopup(num);
		//load popup
		loadPopup(num);
		return false;
	});
				
	//CLOSING POPUP
	//Click the x event!
	$(this).click(function(){
		disablePopup();
	});
	//Click out event!
	$("#backgroundPopup").click(function(){
		disablePopup();
	});
	//Press Escape event!
	$(document).keypress(function(e){
		if(e.keyCode==27 && popupStatus==1){
			disablePopup();
		}
	});

});