$(document).ready(function() {

		
		var randomnumber=Math.floor(Math.random()*11)
		if(randomnumber<=1){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg.jpg");
			}
		if(randomnumber<=2 && randomnumber>1){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg1.jpg");
			}
		if(randomnumber<=3 && randomnumber>2){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg3.jpg");
			}
		if(randomnumber<=4 && randomnumber>3){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg4.jpg");
			}	
		
		if(randomnumber<=5 && randomnumber>4){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg5.jpg");
			}
		if(randomnumber<=6 && randomnumber>5){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg6.jpg");
			}
		if(randomnumber<=7 && randomnumber>6){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg7.jpg");
			}
		if(randomnumber<=8 && randomnumber>7){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg8.jpg");
			}
		if(randomnumber<=9 && randomnumber>8){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg9.jpg");
			}
		if(randomnumber<=10 && randomnumber>9){
				$('#bgimg').attr("src","upload/design/starthintergruende/bg10.jpg");
			}
		
		
		});