var smvb = "St Matthew's Visitors' Book\n \nSorry, you haven't "
var pta = "\n\nPlease try again..."
 function Validate(frm)
 {
 if (frm.name.value == "")
 {
 alert(smvb + "included your name." + pta);
 frm.name.focus();
 return false;
 }
 if (frm.email.value == "")
 {
 alert(smvb + "included an email address." + pta);
 frm.email.focus();
 return false;
 }
 if (frm.email.value.indexOf("@") == -1)
 {
 alert(smvb + "entered a valid email address.\nIt should be something like\n \"yourname@somedomain.somewhere\"" + pta);
 frm.email.focus();
 return false;
 }
 if (frm.email.value.indexOf(".") == -1)
 {
 alert(smvb + "entered a valid email address.\nIt should be something like\n \"yourname@somedomain.somewhere\"" + pta);
 frm.email.focus();
 return false;
 }
if (frm.comment.value == "")
 {
 alert("St Matthew's Visitors' Book\n \nPlease use the Comments box to give us some feedback about this website or to tell us about yourself and St Matthew's.");
 frm.comment.focus();
 return false;
 }
 }