function validate_form()
{
   

    if ( document.contact_form.username.value == "" )
    {
        alert ( "Please fill in the 'Your Name' box." );
		document.contact_form.username.focus();
       return false;
    }
	

	 
	


if ( document.contact_form.email.value == "" )
    {
        alert ( "Please fill in the Email box." );
		document.contact_form.email.focus();
       return false;
	 }
	 
	 
	 var re = /^[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]{2,7}$/;

                                             var email = document.contact_form.email.value;

                                             

                                             if(!email.match(re))

                                             {

                                                        alert("Invalid Email")

                                                        document.contact_form.email.focus()

                                                        return false

                                              }

	 
	
	
	if ( document.contact_form.friendemail.value == "" )
    {
        alert ( "Please fill in the Friend Email box." );
		document.contact_form.friendemail.focus();
       return false;
	 }
	 
	 
	 var re = /^[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]{2,7}$/;

                                             var email = document.contact_form.friendemail.value;

                                             

                                             if(!email.match(re))

                                             {

                                                        alert("Invalid Email")

                                                        document.contact_form.friendemail.focus()

                                                        return false

                                              }

	

	if ( document.contact_form.message.value == "" )
    {
        alert ( "Please fill in the Message box." );
		document.contact_form.message.focus();
        return false;
	 }
	 if ( document.contact_form.captchaval1.value == "" )
    {
        alert ( "Please fill in Verification Code box." );
		document.contact_form.captchaval1.focus();
        return false;
	 }
	
else if(document.contact_form.captchaval1.value!=document.contact_form.captchaval.value)
		 {
			alert ( "Please try Verification Code again" );
			document.contact_form.captchaval1.focus();
			return false;
		 }
	
	
	
	

    return true;
}