<!--

function check_text() {// check //////////////////////////////>
e_k=event.keyCode
//--- if ((e_k > 33 && e_k < 35)||(e_k > 59 && e_k < 61)|| (e_k > 61 && e_k < 63)) {
if ((e_k > 59 && e_k < 61)|| (e_k > 61 && e_k < 63)|| (e_k > 91 && e_k < 93)) {
event.returnValue = false;
alert("ไม่สามารถใช้เครื่องหมาย  < \\ >  ");
}
}

function check_email() {
e_k=event.keyCode
if ((e_k > 160)) {
event.returnValue = false;
alert("Must be at English characters Please enter your information again");
}
}

function check_number() {
e_k=event.keyCode
//if (((e_k < 48) || (e_k > 57)) && e_k != 46 ) {
if (e_k != 13 && (e_k < 48) || (e_k > 57)) {
event.returnValue = false;
alert("Only number 0-9 \nPlease type again");
}
}

function checkBox(){
	var textstring = '';
	for (i=0;i<4;i++) {
		var box = document.forms['formName'].elements[i];
		if (!box.value) {
			alert('ไม่ได้ป้อนข้อมูล ' + box.name + '!');
			box.focus()
			return;
		}
		textstring += box.name + ': ' + box.value + '\n';
	}

	user_input = '';
	for (i=0;i<document.forms[0].why.length;i++) {
		if (document.forms[0].why[i].checked) {
			user_input = document.forms[0].why[i].value;
		}
	}
	textstring += 'Why: ' + user_input + '\n';

	user_input = document.formName.refer.options[document.formName.refer.selectedIndex].value
	textstring += 'How: ' + user_input + '\n';

	textstring += 'More info: ';
	for (i=9;i<13;i++) {
		if (document.formName.elements[i].checked) {
			textstring += document.formName.elements[i].name + ' ';
		}
	}

	document.forms[0].output.value = textstring;
}

-->