function checkEmail(email) 
{
var ems="";
if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email))
{
return ems;
}
ems+="Invalid E-mail Address!";
return ems;                                            
}

function contact()
{
                  
                    
  if (document.getElementById('name').value=="") 
    {
    alert("Enter Name.");
    document.getElementById('name').focus();
    return false;
   
   }
   

  if (document.getElementById('email').value=="") 
    {
    alert("Enter email.");
    document.getElementById('email').focus();
    return false;
   
   } else{
        var msg_a="";
        msg_a=checkEmail(document.getElementById('email').value);
        if(msg_a!="")
        {
        alert(msg_a);
        return false;
        }
   }


  if (document.getElementById('subject').value=="") 
    {
    alert("Enter subject.");
    document.getElementById('subject').focus();
    return false;
   
   }

  document.getElementById('frmcontact').submit(); 
}