var popupActive=new Array;

function loadPopup(id){
	if(popupActive[id]==0){
		$("#backgroundPopup").css({
			"opacity": "0.7"
		});
		$("#backgroundPopup").fadeIn("slow");
		$("#popup"+id).fadeIn("slow");
		popupActive[id]=1;
	}
}

function disablePopup(id){
	if(popupActive[id]==1){
		$("#backgroundPopup").fadeOut("slow");
		$("#popup"+id).fadeOut("slow");
		popupActive[id]=0;
	}
}

function centerPopup(id){
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#popup"+id).height();
	var popupWidth = $("#popup"+id).width();
	$("#popup"+id).css({
		"position": "absolute",
		"top": windowHeight/2-popupHeight/2,
		"left": windowWidth/2-popupWidth/2
	});
	$("#backgroundPopup").css({
		"height": windowHeight
	});
}