//0 means disabled; 1 means enabled;
var popupStatus = 0;

//loading popup with jQuery magic!
function loadPopup() {
	//loads popup only if it is disabled
	if(popupStatus==0){
	    $("#video-overlay-bg").css({
			"opacity": "0.7"
		});
		$("#video-overlay-bg").fadeIn("slow");
		$("#video-overlay").fadeIn("slow");
		popupStatus = 1;
	}
}

//disabling popup with jQuery magic!
function disablePopup() {
	//disables popup only if it is enabled
    if(popupStatus==1){
        $("#video-overlay").fadeOut("slow");
        $("#video-overlay-bg").fadeOut("slow");
	popupStatus = 0;
	}
}

//centering popup
function centerPopup() {

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

	$("#video-overlay-bg").css({
		"height": windowHeight
	});
	
}


//CONTROLLING EVENTS IN jQuery
$(document).ready(function() {
    //disablePopup();
    //LOADING POPUP
    //Click the button event!
    $(".launchOverlay").click(function() {
        //centering with css
        centerPopup();

        //load popup
        loadPopup();
    });

    //CLOSING POPUP
    //Click the x event!
    $("#hide-button").click(function() {
        disablePopup();
    });
    //Click out event!
    $("#video-overlay-bg").click(function() {
        disablePopup();
    });
    //Press Escape event!
    $(document).keypress(function(e) {
        if (e.keyCode == 27 && popupStatus == 1) {
            disablePopup();
        }
    });

});