function doEmpty(txt) {
var defaultVal = getDefaultVal(txt.name);
if (txt.value == defaultVal) {
  txt.value = "";

}
}
function getDefaultVal(name){
var fname = "Your First Name";
var requestor = "Your Name";
var sender = "Your Email Address";
var inquiry="Type your question here.";
var phone="Phone Number";
return(eval(name));

}