var sourceText = "ABCDEFGHJIKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz123456789"

function getRandomChars(){
	var value = "";
	var index = null;
	for(var i = 0; i < 6; i++){
		index = Math.round(Math.random() * 62);
		value = "" + value + sourceText.substring(index, index + 1);
	}
	return (value);
}	

function generateCaptcha(ID){
	var randomText = getRandomChars();
	if(document.getElementById(ID)){
		document.getElementById(ID).innerHTML = randomText;
		captchaHash = randomText;
	}
}