function overlayShow(){
	overlay = $("#jh-c_overlay").fadeIn('fast');
}
function overlayHide(){
	overlay = $("#jh-c_overlay").hide();
}



function reCenterOveray() {
	overlay = $("#jh-c_overlay");
	top = $(window).scrollTop() - (overlay.outerHeight() / 2),
	left = -(overlay.outerWidth() / 2);
	overlay.css({'margin-top': top,'margin-left': left});
	//$("#jh-c_overlay").position();
}
function reCenterHorizontally(overlay) {
	left = -(overlay.outerWidth() / 2);
	overlay.css({'margin-left': left});
}

function reCenterVertically() {
	overlay = $("#jh-c_overlay");
	top = $(window).scrollTop() - (overlay.outerHeight() / 2),
	overlay.css({'margin-top': top});
}