function e_friend()
			{
			var e_add= prompt('Enter your friend\'s email address:',' ');
			var subj= prompt('Enter the subject of your message:',' ');
			if ((subj==" ") || (subj==null))
 			subj="Suggesting www.naturaleffects.co.uk";
			window.location="mailto:"+e_add+"?subject="+subj;
			}