function spamProtect() {
//	only use on pages with hud.ac.uk emails only, finds mailto's without a domain and adds @hud.ac.uk
//	For example: "mailto: jo.bloggs" becomes "mailto:jo.bloggs@hud.ac.uk
 document.domain="hud.ac.uk";
 var objRegExp = /(mailto:([a-zA-Z]\.){0,3}[a-zA-Z0-9]+)/g;
 document.body.innerHTML = document.body.innerHTML.replace (objRegExp,"$1@hud.ac.uk");
}
function spamProtectExternal() {
//	replaces email addresses encrypted in the following way: "mailto:domain.com,jo.bloggs"
 document.domain="hud.ac.uk";
var objRegExp = /mailto:([a-zA-Z0-9-_]+(\.[a-zA-Z]{2,3}){1,2}),([a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+){0,})/g;												
	document.body.innerHTML = document.body.innerHTML.replace(objRegExp,"mailto:$3@$1");
}