var over = true;
var sel = false;
var selths = false;
function imgover(ths,url)
{
  if(over == true)
  {
    ths.src = url;
  }
}

function imgout(ths,url)
{
  ths.src = url;
}

function imgclear(ths,url,urlno,value)
{
  if(sel !=false) {selths.src=sel;sel=false;}
  if(sel == false) {sel=urlno;selths=ths;}
  over = false;
  ths.src = url;
  var hid=document.getElementById('rating');
  hid.value = value;
  this.form.submit();
}