$(document).ready(function() {
	var bgimg = new Image()
	bgimg.src = $('img#dbsbg').attr('src')
	bgimg.onload = function() {
		// Anpassen
		resz()
		// Neues einfaden
		$('img#dbsbg').fadeIn('slow')
	}

	// Event
	$(window).resize(function(){
		resz()
	})
	
	var resz = function() {
		var width = $(window).width();
		var height = $(window).height();

		var imwidth = $('#dbsbg').width();
		var imheight = $('#dbsbg').height();

		var over = imwidth / imheight;
		var under = imheight / imwidth;
		if((width / height) >=over)
		{
			$('#dbsbg').css({'width':width,'height':under*width});
		}
		else
		{
			$('#dbsbg').css({'width':over*height,'height':height});
		}
	}
});