// JavaScript Document
  
function ValidateLogin(Form)
  {
	if (Form.name.value=="")
	  {
		alert ("Please,insert a name!")
		Form.name.focus();
		return false;
	  }
  }
  
function IsNumber(sText)
  {
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber; 
  }