Untitled

<html>
<head>
<script>
function colorCh(input) {
color=input.value;
power=
 parseInt(color.substr(0,2),16)
+parseInt(color.substr(2,2),16)
+parseInt(color.substr(4,2),16);
input.style.background = color;
if (power>256*1.5)
{
   input.style.color = "000000";
}
else
{
   input.style.color = "FFFFFF";
}
return;
}
</script>
</head>
<body>
<form action="/post" method="postp" enctype="application/x-www-form-urlencoded" style="font-family:courier;">
__
<input type="text" size="12" value="R G B" style="font-family:courier;" readonly>
<br>
00
<input type="text" size="12" value="FF00FF" onchange="colorCh(this)" style="background-color:#FF00FF;font-family:courier;">
<br>
<input type="submit" value="Submit">
</form>
</body>
</html>