function validate_form(formname) 
{
	if(formname.email.value == "") 
	{
		alert("Please enter your email address.");
		formname.email.focus();
		return;
	}
	if (formname.email.value.indexOf('@',0) == -1 || formname.email.value.indexOf('.',0) == -1) 
	{
		alert("Please enter your correct email address.");
		formname.email.value.focus();	
		return;
	}
	formname.submit();															
}