HTML Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<script type="text/javascript">
function WebseiteAufrufen () {
window.open(href = document.getElementsByName("webseite")[0].value);
return false;
}
</script>
</head>
<body>
<form name="form1" action="#" onsubmit="return WebseiteAufrufen();" target="_blank">
<input type="text" name="webseite" size="50" />
<input type="submit" value=" GO! " />
</form>
</body>
</html>