function RandomBackground(images,btags)
{
 si = 0; 
 ci=0;
 cc=0;
 imageSet = new Array();
 ei = images.length;
  for (i=1;i<ei;i++) {
    if (images.charAt(i) == ' ' || images.charAt(i) == ',') {
      imageSet[cc] = images.substring(si,i);
      cc++;
      si=i+1;
      }
    }
  ind = Math.floor(Math.random() *cc);
  document.writeln("<body "+btags+" background=\""+imageSet[ind]+"\">");
}