var nowdiv_id
function alertwindow(div_id)
{
	nowdiv_id=div_id
    createalertdiv();
	$(".alert").css("display","none")
	$(".alert2").css("display","none")
	$("#mydivbg").css("height", $(document).height());
	
    var div_k=$("#"+div_id).css("width").replace("px","");
	var div_g=$("#"+div_id).css("height").replace("px","")
	$("#mydivbg").stop(true,true).fadeto(200,0.8)
	
	$("#"+div_id).css("position", "absolute");
	$("#"+div_id).css("left", ($(window).width()-div_k)/2);
	$("#"+div_id).css("z-index", "100000000");
	$("#"+div_id).css("width", div_k+"px");
	$("#"+div_id).css("height", div_g+"px");
	$("#"+div_id).fadeto(200,1)
	
	//$("#"+div_id).css("top","120px");
	//$(".alert").css("top",130+$(document).scrolltop());
	
	$(window).trigger("resize");
	$(window).trigger("scroll");	
}

$(window).scroll(function(){
	if($("#mydivbg").length!=0)
	{
		$(".alert2").css("top", $(document).scrolltop() );
		 $("#mydivbg").css("width",$(window).width()+"px");
	}
})

function closewindow()
{
	if($("#mydivbg").length!=0)
	{
		$("#mydivbg").fadeto(100,0).delay(10).hide(100);
		$(".alert").css("display","none")
		$(".alert2").css("display","none")
	}
}

$(window).resize(function()
{
	if($("#mydivbg").length!=0)
	{	
		$("#mydivbg").css("width","0px");
		$("#mydivbg").css("width",$(document).width()+"px");
		$(".alert2").css("top",$(document).scrolltop());
		var div_k=$("#"+nowdiv_id).css("width").replace("px","");
		$("#"+nowdiv_id).css("left", ($(window).width()-div_k)/2);
	}
})

function  createalertdiv()
{
	if($("#mydivbg").length==0)
	{	
	  $("body").prepend("<div id='mydivbg'></div>");
	  $("#mydivbg").css("display", "none");
	  $("#mydivbg").css("position", "absolute");
	  $("#mydivbg").css("top", "0px");
	  $("#mydivbg").css("left", "0px");
	  $("#mydivbg").css("background", "#000000");
	  $("#mydivbg").css("width",$(window).width()+"px");
	  $("#mydivbg").css("height", $(window).height()+"px");
	  $("#mydivbg").css("z-index", "9999999");
	}
}