var popupStatus = 0;

//loading popup with jQuery magic!
function loadPopup(){
	//loads popup only if it is disabled
	if(popupStatus==0){
		$("#backgroundPopup").css({
			"opacity": "0.7"
		});
		$("#backgroundPopup, #popup_container, #popup_top, #popup, #popup_bottom").fadeIn("slow");
		
		popupStatus = 1;
	}
}

//disabling popup with jQuery magic!
function disablePopup(){
	//disables popup only if it is enabled
	if(popupStatus==1){

		$("#backgroundPopup, #popup_container, #popup_top, #popup, #popup_bottom").fadeOut("slow");


		popupStatus = 0;
	}
}

//centering popup
function centerPopup(){
	//request data for centering
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popup_containerHeight = $("#popup_container").height();
	var popup_containerWidth = $("#popup_container").width();
	


	//alert (windowWidth);
	//alert (popupWidth);
	
	//centering
	$("#popup_container").css({
		"position": "fixed",
		"top": windowHeight/2-popup_containerHeight/2,
		"left": windowWidth/2-popup_containerWidth/2
	});
	
	//only need force for IE6
	$("#backgroundPopup").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!
	$("#popupClose").click(function(){
		disablePopup();
	});
	$("#popupClose_corner").click(function(){
		disablePopup();
	});
	//Click out event!
	$("#backgroundPopup").click(function(){
		disablePopup();
	});
	//Press Escape event!
	$(document).keypress(function(e){
		if(e.keyCode==27 && popupStatus==1){
			disablePopup();
		}
	});

});