function checkInputLimit(obj){
	var mlen = parseInt(obj.maxLength);
	var clen = obj.value.calcByteLength();
	if(clen > mlen)obj.value = obj.value.left(mlen);
}
function setImg(obj){
	var rtn = showModalDialog("../include/FileManager.aspx",obj.value,"dialogHeight:600px;dialogWidth:730px;scroll:yes;help:no;status:no;")
	if(typeof(rtn) != "undefined"){
		obj.value = rtn;
	}
}
function onlyAlphaAndDigit(passport){
	return passport.replace(/[^a-zA-Z0-9]/gim,"");
}
function hasNoneAlphaAndDigit(passport){
	var reg = new RegExp("[^a-zA-Z0-9]{1,}","ig");
	return reg.test(passport);
}