function doValidate() {
	errorSt = "";

	textbox = document.getElementById(seqCtrlID);
	seq = textbox.value;
	if (seq=="")
		errorSt += "Please input seq no.\n";
	else
		for (i=0; i<seq.length; i++) {
			ch = seq.charAt(i);
			if (ch<'0' || ch>'9') {
				errorSt += "Seq no. should be a number.\n";
				break;
			}
		}
	seqArr = seqList.split(",");
	for (i=0; i<seqArr.length; i++) {
		if (seq!=seqOrg && seq==seqArr[i]) {
			errorSt += "This seq no. is used in another inner page.\n";
			break;
		}
	}

	if (errorSt != "") {
		errorSt = "Errors in input:\n\n" + errorSt;
		alert(errorSt);
		return false;
	} else
		return true;
}