function chk_register()
{

    var x = document.register;
    
    if(x.name.value == "")
    {
        
        alert("Enter Name");
        x.name.focus();
        return false;
    }
    
    if(x.email.value == "")
    {
        
        alert("Enter Email Address");
        x.email.focus();
        return false;
    }

	if(!isMail(x.email.value))
	{
		alert("Please input a valid email address!");
		x.email.focus();
		return false;
	}

    if(x.near_office.value == 0)
    {
        
        alert("Select Nearest Office");
        x.near_office.focus();
        return false;
    }

    if(x.country_res.value == 0)
    {
        
        alert("Select Country of Residence");
        x.country_res.focus();
        return false;
    }

    return true;
    
}

function isMail(value)
{

   var testresults;
	  
   var str = value;
	  
   var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	 
   if (filter.test(str))
      testresults=true;
   else
      testresults=false
	 
   return testresults;

}