<html>
<head>
<script language="JavaScript" type="text/javascript">
<!--
validValues = new Array('0', '01', '011', '012');
function changeColor(elid, color)
{
document.getElementById(elid).style.backgroundColor = color;
return true;
}
function isValid(elem)
{
if (document.getElementById(elem).value != '')
{
for (var i = 0; i < validValues.length; i++)
{
if (document.getElementById(elem).value == validValues[i])
{
changeColor(elem, '#0f0');
return true;
}
}
}
else
{
changeColor(elem, '#fff');
return true;
}
changeColor(elem, '#f00');
return true;
}
//-->
</script>
</head>
<body>
<form action="" method="">
<input id="txt" type="text" style="background-color:#fff;" onKeyup="isValid('txt')" />
<input type="submit" value="Abschicken" />
</form>
</body>
</html> |