function GRLettersValidation(entered,elid)
//entered=letters to validate
//elid=next focus if valid
{
with (entered)
{
var sq = "%SV%SW%SX%SY%SZ%TV%SR%SS%ST%SU%TQ%TR%SM%SN%SO%SP%TL%TM%SH%SJ%SK%TF%TG%SC%SD%SE%TA%NW%NX%NY%NZ%NR%NS%NT%NU%NL%NM%NN%NO%NF%NG%NH%NJ%NK%NA%NB%NC%ND%HW%HX%HY%HZ%HT%HU%HP%";
var test="%" + entered.value + "%";
re = new RegExp(test,"i");
var str = sq.match(re);
if (!str){
	alert("GR Letters Not Valid - " + entered.value);
	return false;}
	else {
		document.getElementById(elid).focus();
		return true;}
}
}