function validate() {

	var message = "";
	var strTel = new String(document.all.frmContactUs.txtTel.value)
	strTel = strTel.replace(" ","")
	if((document.all.frmContactUs.txtEmail.value =="") && (strTel == ""))
	{
		message = "You must supply an email address or telephone number.";
	}
	else if(document.all.frmContactUs.txtEmail.value!="" 
	&& (new String(document.all.frmContactUs.txtEmail.value)).search(/^([-a-zA-z0-9]{1,}[.]){0,}[-a-zA-Z0-9]{1,}[@]([-a-zA-z0-9]{1,}[.]){1,}[a-zA-Z]{2,4}$/gi)==-1)
			message += "You must enter a valid email address!\n";
	else if(isNaN(strTel)) message += "You must enter a valid telephone number!\n";

	if(message=="") return true;
	alert(message);
	return false;

}