/***************************/
//@Author: Adrian "yEnS" Mato Gondelle
//@website: www.yensdesign.com
//@email: yensamg@gmail.com
//@license: Feel free to use it, but keep this credits please!					
/***************************/

//SETTING UP OUR POPUP
//0 means disabled; 1 means enabled;
var popupStatus = 0;

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

        $("#backgroundPopup").fadeIn("slow");
		$("#" + id).fadeIn("slow");
		popupStatus = 1;
	}
}

//disabling popup with jQuery magic!
function disablePopup(id){
	//disables popup only if it is enabled
	if(popupStatus==1){
		$("#backgroundPopup").fadeOut("fast");
		$("#" + id).fadeOut("fast");
		popupStatus = 0;
	}
}

//centering popup
function centerPopup(id){
	//request data for centering
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#" + id).height();
	var popupWidth = $("#" + id).width();

    var top = windowHeight/2-popupHeight/2 - 70;
    if(top < 0){
        top = 0;
    }
    var left = windowWidth/2-popupWidth/2;
    if (left < 0){
        left = 0;
    }
    //stay in a viewport
    top += $(window).scrollTop();

	//centering
	$("#" + id).css({
		"position": "absolute",
		"top": top,
		"left": left
	});
	//only need force for IE6	
	$("#backgroundPopup").css({
		"height": windowHeight * 2
	});
}