Кольцо золотое с бриллиантами

 
<script type="text/javascript">
//@author: http://bigemot.ru
window.addEvent('domready', function() {
  var vmStr= $('vmMainPage').getElement('.productPrice'); 
  var Box=$$('.vmAttribChildDetail select');
  var vmPrice= vmStr.innerHTML; 
  sumBox();
  Box.addEvent('change', function() {
    sumBox();
    });
 
  function strNum(x) {
     var r = ""; 
    for(var n=0; n<x.length; n++) {
      var base= x.charAt(n);
      if (base!=' '&&isNaN(base)==false||base==',')
      r = r + base;
    }
    return parseFloat(r.replace(/,/g,"."));
  }
  function strPrice(x) {
    x = x.toString();
    var y = x.charAt(0);
    for(var n=1; n<x.length; n++) {
      if (Math.ceil((x.length-n)/3) == (x.length-n)/3) y = y + " ";
      y = y + x.charAt(n);
    }
     return y; 
  }
  function adPrice(x) {
    var add=x.options[x.selectedIndex].innerHTML;
    var n=add.lastIndexOf("(");
    var operand=add.slice(n+1,n+2);
    return operand+strNum(add.slice(n));
  }
  function sumBox() {
    var price=strNum(vmPrice);
    for(var n=0; n<Box.length; n++) {
      price=eval(price+adPrice(Box[n]));
    }
    vmStr.innerHTML=vmPrice.replace(strPrice(strNum(vmPrice)), strPrice(price));
  }
});
</script>