var empty = "";
var nametext = " FULL NAME"
var emailtext = " EMAIL"
var commentstext = " COMMENTS"

function repop(){
if (document.cf.fullname.value==empty)
document.cf.fullname.value = nametext;

if (document.cf.email.value==empty)
document.cf.email.value = emailtext;

if (document.cf.comments.value==empty)
document.cf.comments.value = commentstext;
}