var subtotall=30;
 
  function verify_website(){

      url = "ajax/backendprice.php";
      new Ajax.Request(url, {
         method: 'post',
         encoding: 'UTF-8', 
         parameters: {
          action: 'validate',
          website: $('website').value
              },
         onSuccess: function(transport) {
             if (transport.responseText.match("1"))
             {
              if(subtotall == 30)
              {
                subtotall=0;
                $("setup").innerHTML = "$0";              
                var sub=$("subtotal").innerHTML;
                sub =sub.replace("$", "");            
                $("subtotal").innerHTML = "$"+ (sub - 30);
                $("checksetup").value = "1";
              
              }
             }
             
         } 
         }
         );
  
  
  
  
  
  }




  function edit()
	{
	 
	    var numericExpression = /^[0-9]+$/;
    

     var fi= $("field").value ;
     if($("field").value)
     {
       if($("field").value.match(numericExpression))
       {
       var quantity = fi * 2;
       $("quantity").innerHTML = "$"+ quantity;
 
       $("subtotal").innerHTML = "$"+ (quantity + subtotall);
  	   }
  	   else{
       alert("Please enter only numbers ");
       $("field").value = "1";
       }
     }
    else
    {
      alert("Please fill all fields ");
      $("field").value = "1";
    }
    
	}