var popupStatus = 0;  
$("document").ready(function(){
	centerPopup();
	popup();

	$(document).keypress(function(e){  
		 if(e.keyCode==27 && popupStatus==1){  
			 disablePopup();  
		 }  
	});
	
	
	$("#closePopup").click(function(){
		disablePopup();
	});
});

function popup()
{
	if(popupStatus==0){  
		$("#backgroundPopup").css({  
			"opacity": "0.7"  
		 });  
		$("#backgroundPopup").fadeIn("slow");  
		$("#awaberForm").fadeIn("slow");  
		popupStatus = 1;  
	}
}
 function disablePopup(){  
	if(popupStatus==1){  
		$("#backgroundPopup").fadeOut("slow");  
		$("#awaberForm").fadeOut("slow");  
	 popupStatus = 0;  
	}  
 }
function centerPopup(){  
	var windowWidth = document.documentElement.clientWidth;  
	var windowHeight = document.documentElement.clientHeight;  
	var popupHeight = $("#awaberForm").height();  
	var popupWidth = $("#awaberForm").width();  
	  
	$("#awaberForm").css({  
		"position": "absolute",  
		"top": windowHeight/2-popupHeight/2,  
		"left": windowWidth/2-popupWidth/2  
	});
	$("#backgroundPopup").css({  
		"height": windowHeight  
	});  
}