$(document).ready(function() {
	var randomnumber=Math.floor(Math.random()*7);
	
	switch (randomnumber) {
		case 0: $('body').css("background-image", "url(fileadmin/templates/images/background/bg_09.png)");
	    break;
		
		case 1: $('body').css("background-image", "url(fileadmin/templates/images/background/bg_02.png)");
	    break;
		
		case 2: $('body').css("background-image", "url(fileadmin/templates/images/background/bg_03.png)");
	    break;
		
		case 3: $('body').css("background-image", "url(fileadmin/templates/images/background/bg_04.png)");
	    break;
		
		case 4: $('body').css("background-image", "url(fileadmin/templates/images/background/bg_05.png)");
	    break;
		
		case 5: $('body').css("background-image", "url(fileadmin/templates/images/background/bg_06.png)");
	    break;
		
		case 6: $('body').css("background-image", "url(fileadmin/templates/images/background/bg_07.png)");
	    break;
		
		case 7: $('body').css("background-image", "url(fileadmin/templates/images/background/bg_08.png)");
	    break;
	}
	
});