document.write("<input name=\"inputloginauthcode\" id=\"inputloginauthcode\" type=\"text\" size=\"6\" maxlength=\"6\" style=\"border: 1px solid #C4C4C4 ; height:22px ; width:105px ; font-size:14pt; font-weight: bold;\" /><br>");
document.write("<img id=\"loginauthimg\" border=\"0\" src=\"./inc/Chart.php?authcode=e5ac\"><br>");
document.write("<a href=\"javascript:void(ChangeloginImageCode())\" >重取認證碼</a>");
document.write("<input name=\"loginauthcode\" id=\"loginauthcode\" type=\"hidden\" value=\"e5ac\" />");


function ChangeloginImageCode(){
	var StringCode="abcdefhjkmnprstuvwxyz2345678";
	authcode="";

	//for(i=0;i<6;i++){
	for(i=0;i<4+Math.floor(Math.random() * 3);i++){
		authcode+=""+StringCode.charAt(Math.floor(Math.random() * StringCode.length));
	}

	document.getElementById('loginauthcode').value=authcode;
	document.getElementById('loginauthimg').src="./inc/Chart.php?authcode="+authcode;
}

function CheckloginAuth(){
	return document.getElementById('loginauthcode').value==document.getElementById('inputloginauthcode').value.toLowerCase();
}