<!-- //script of form validation

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function checkContactform()
{
   var pname = document.getElementById("pname").value;
   var age = document.getElementById("age").value;
   var phone = document.getElementById("phone").value;
   var email = document.getElementById("email").value.indexOf("@");
   var email = document.getElementById("email").value.indexOf(".");
   var goal = document.getElementById("goal").value;
   var interest = document.getElementById("interest").value;
   
   if (pname == "")
   {
	   alert("Please enter your name");
	   document.getElementById("pname").select();
	   document.getElementById("pname").focus();
	   return false;
   }

   else if (parseInt(age) != age || age.length>2)
   {
	   alert("Please enter your age");
	   document.getElementById("age").select();
	   document.getElementById("age").focus();
	   return false;
   }
   
    
   else if (!(isInteger(phone) && (phone.length == 8 || phone.length == 10)))
      {
   	   alert("Phone number has to be numeric without space");
   	   document.getElementById("phone").select();
   	   document.getElementById("phone").focus();
   	   return false;
   }
   
   else if (email == -1)
   { 
	alert("Please enter a correct email address in format a@b.c"); 
	document.getElementById("email").select(); 
	document.getElementById("email").focus(); 
	return false; 
   } 
   else if (goal == "")
     {
          alert("Please fill in the goal content");
          document.getElementById("goal").select();
          document.getElementById("goal").focus();
          return false;
   }
   else if (interest == "")
  {
       alert("Please fill in the interest content");
       document.getElementById("interest").select();
       document.getElementById("interest").focus();
       return false;
   }
   
   else 
	   return true;
  
}

//end of script-->