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").fadeIn("slow");
		$("#popupContact").fadeIn("slow");
		popupStatus = 1;
	}
}

// disabling popup with jQuery magic!
function disablePopup() {
	// disables popup only if it is enable	d
	if (popupStatus == 1) {
		$("#backgroundPopup").fadeOut("slow");
		$("#popupContact").fadeOut("slow");
		popupStatus = 0;
	}
}

// centering popup
function centerPopup() {
	// request data for centering
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#popupContact").height();
	var popupWidth = $("#popupContact").width();
	// centering
	$("#popupContact").css( {
		"position" :"absolute",
		"top" :windowHeight / 2 - popupHeight / 2,
		"left" :windowWidth / 2 - popupWidth / 2
	});
	// only need force for IE6

	$("#backgroundPopup").css( {
		"height" :windowHeight
	});

}