// JavaScript Document
function isValidEmail(str) {
   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
 
}

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 logincheck(){
var username =  document.getElementById('username');
var passwd =  document.getElementById('passwd');
if(username.value=="")
{ alert("Please enter the user name");document.getElementById("username").focus();return false; }

if(passwd.value=="")
{ alert("Please enter password");document.getElementById("passwd").focus();return false;}

return true;
} // end fun

function registerCheck(){
var username =  document.getElementById('username');
var passwd =  document.getElementById('passwd');
var fname = document.getElementById('fname');
var lname = document.getElementById('lname');
var email =  document.getElementById('email');
var phone =  document.getElementById('phone');
var company =  document.getElementById('company');
var address =  document.getElementById('address');


if(username.value=="")
{ alert("Please enter user name");document.getElementById("username").focus();return false; }
if(passwd.value=="")
{ alert("Please enter password");document.getElementById("passwd").focus();return false;}
if(fname.value=="")
{ alert("Please enter first name");document.getElementById("fname").focus();return false; }
if(lname.value=="")
{ alert("Please enter last name");document.getElementById("lname").focus();return false; }
if(email.value=="") { alert ("Please Enter Your Email Address");document.getElementById("email").focus(); return false;}
if (!isValidEmail(email.value)){ alert("Please Enter A Valid E-mail Address");document.getElementById("email").focus(); return false; }
if(phone.value=="") { alert ("Please Enter Your Phone No.");document.getElementById("phone").focus(); return false;}
if(!isInteger(phone.value)){ alert("Please Enter a valid Phone Number");document.getElementById("phone").focus(); return false;}
if(company.value=="")
{ alert("Please enter company name");document.getElementById("company").focus();return false; }
if(address.value=="")
{ alert("Please enter address");document.getElementById("address").focus();return false;}
return true;
} // end fun