// JavaScript Document


function setBackgroundImage(path, color) {
  var width = screen.width;
	var height = screen.height;
	var img = path + "img/hintergrund/" + color + "_1920x1200.jpg";
	
	switch (true) {
		case (width <= 1024 && height <= 768):
			img = path + "img/hintergrund/" + color + "_1024x768.jpg";
			break;
			
		case (width <= 1440 && height <= 1050):
			img = path + "img/hintergrund/" + color + "_1440x1050.jpg";
			break;
			
		default:
			img = path + "img/hintergrund/" + color + "_1920x1200.jpg";
	}
	
	var documentBody = document.getElementsByTagName('BODY');
	documentBody[0].style.backgroundImage = "url("+img+")";
}