$(window).resize(background_image);
$(document).ready(background_image);
window.onload=function(){
background_image();
}
function background_image() {
	$("body").css("background", "#1A1A1A");
	$("#background_holder").hide();
	$("#background_img").hide();
	//$("#login_box").hide();
	var width = $(window).width();
	var height = $(window).height();
	$("#background_holder").css("width", width + "px").css("height", height + "px").show();
	$("#background_img").css("width", width + "px").css("height", "").css("margin", "0").show();
	if($("#background_img").height() > height){
		$("#background_img").css("marginTop", "-" + ($("#background_img").height() - height) / 2 + "px" )
	}
	if($("#background_img").height() < height){
		$("#background_img").css("height", height + "px").css("width", "").css("margin", "0");
		if($("#background_img").width() > width){
			$("#background_img").css("marginLeft", "-" + ($("#background_img").width() - width) / 2 + "px" )
		}
	}
	$("#login_box").css("marginTop", ((height / 2) - ($("#login_box").height() / 2)) + "px").show();
	if(height < $("#login_box").height()){
		$("#login_box").css("marginTop", "0").show();
	}
}