// Captcha Helper Functions
var oBlnkImg = new Image();
oBlnkImg.src = "images/captcha.gif";
function getRandomString(){
 var iCtr; var iIdx; var sRndStr;
 var aryChrTbl = Array(
	'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
	'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
	'1','2','3','4','5','6','7','8','9','0','-','_');
 var iArySize = (aryChrTbl.length - 1);
 var iStrSize = (20 - (Math.random() * 10));
 for (iCtr = 0; iCtr < iStrSize; iCtr++)
	sRndStr += aryChrTbl[parseInt(iArySize - (Math.random() * iArySize))];
 return sRndStr
}
function refreshCaptcha(){
 var cImg = gO("captchaImg");
 cImg.src = "captcha.asp?r=" + getRandomString();
}