////
// validate contact form
function validate(){
	var f=document.form1;
	if (f.first_name.value=="" || f.first_name.value.length==0){
		alert ('Please enter your first name'); f.first_name.focus(); return false;
	}
	if (f.email.value=="" || f.email.value.length==0){
		alert ('Please enter your email address'); f.email.focus(); return false;
	} else {
	  if (check_email(f.email.value) == false){
			alert ('Your email address does not appear to be valid'); 
			f.email.focus(); return false;
	  }			 
	}	
  return true;
}
function check_email(email) {
		var result = false
		var theStr = new String(email)
		var index = theStr.indexOf("@");
		if (index > 0) {
			var pindex = theStr.indexOf(".",index);
			if ((pindex > index+1) && (theStr.length > pindex+1))
				result = true;
		}
		return result;
}