var initialsubj="Have you seen largeprintbookshop.co.uk"
var initialmsg="Hi:\n I was just looking at www.largeprintbookshop.co.uk and thought I'd tell you about it."+window.location
var good;
function checkEmailAddress(field) {

var goodEmail = field.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\.info)|(\.sex)|(\.biz)|(\.aero)|(\.coop)|(\.museum)|(\.name)|(\.pro)|(\..{2,2}))$)\b/gi);
if (goodEmail) {
good = true;
}
else {
alert('Please enter a valid address.');
field.focus();
field.select();
good = false;
   }
}
u = window.location;
function mailThisUrl() {
good = false
checkEmailAddress(document.eMailer.email);
if (good) {

window.location = "mailto:"+document.eMailer.email.value+"?subject="+initialsubj+"&body="+initialmsg
   }
}