function centerPopup(){
	//request data for centering
	var windowWidth = document.documentElement.clientWidth;
	var windowHeight = document.documentElement.clientHeight;
	var popupHeight = $("#player_cont").height();
	var popupWidth = $("#player_cont").width();
	//centering
	$("#player_cont").css({
		"position": "absolute",
		"top": windowHeight/2-popupHeight/2,
		"left": windowWidth/2-popupWidth/2
	});
	//only need force for IE6
}
$(document).ready(function(){
	centerPopup();
	$("#xbtn").click(function(){
		//$("#overlay").removeClass("overlay");
		//$("#player_cont").hide();
		$("#backgroundPopup").fadeOut("fast");
		$("#player_cont").fadeOut("fast");
	});
	$("#showBtn").click(function() {
		//$("#overlay").fadeIn("slow");
		//$("#player_cont").show();
		$("#backgroundPopup").css({
			"opacity": "0.7"
		});
		$("#backgroundPopup").fadeIn("slow");
		$("#player_cont").fadeIn("slow");
	});
});