// JavaScript Document
ValidateNumber=function(e) {
	var event=new Event(e);
   if (event.code > 47 && event.code < 58 || event.code==46) {
	   var c=event.key;
	   if (event.code==46) c=".";
       var val=this.value+c;
	   if (val*1==val) 
		   return;
	   else
		   event.preventDefault();
   }
   else if (event.key.length!=1)
      return; 
   else
     event.preventDefault();
}

window.addEvent('domready',function() {
	$$('.optionnumberfield').each(function(x) {
		x.addEvent('keypress',ValidateNumber);
	});
});