/*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 checkform(form)
{
  // ** START **
      if (form.name.value == "") {
    alert( "Please enter your name." );
    form.name.focus();
    return false ;
  }

      if (form.companyname.value == "") {
    alert( "Please enter your company name." );
    form.companyname.focus();
    return false ;
  }

      if (form.address.value == "") {
    alert( "Please enter your address." );
    form.address.focus();
    return false ;
  }

     

if (form.mobileno.value == "") {
    alert( "Please enter your mobile no." );
    form.mobileno.focus();
    return false ;
  }
  
  if (form.residence.value == "") {
    alert( "Please enter your residence." );
    form.residence.focus();
    return false ;
  }

if (form.email.value == "") {
    alert( "Please enter your email id." );
    form.email.focus();
    return false ;
  }

  if (form.requirement.value == "") {
    alert( "Please enter your requirement." );
    form.requirement.focus();
    return false ;
  }
	
  // ** END **
  return true ;
}