function random_class(id)
{	
	
	var img = new Array();
	img[0] = '/assets/templates/main/img/'+'builders3.png';
	img[1] = '/assets/templates/main/img/'+'builders4.png';
	img[2] = '/assets/templates/main/img/'+'builders5.png';
	img[3] = '/assets/templates/main/img/'+'builders6.png';
	
	var i = Math.floor( Math.random() * img.length );
	
	if (navigator.appVersion.indexOf('MSIE') > 0)
	{
		var version = parseFloat(navigator.appVersion.split("MSIE")[1]);
		if (version > 6)  {
			document.getElementById("builders").src = img[i];	
		} else {
			document.getElementById("builders").style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+img[i]+"');)";
		}
	} else {
		document.getElementById("builders").src = img[i];
	}
}