mi da errore ti posto il codice se ci puoi dare un okkio al volo
codice:
<html>
<head>
<script type="text/javascript">
function camcol(color1, cc)
{
cc.style.backgroundColor = color1;
}
</script>>
</head>
<body>
This example demonstrates how to change the background color of an input field.</p>
Mouse over the three colored table cells, and the input field will change background-color:</p>
<table width="100%"><tr>
</tr></table>
<form>
<input type="text" id="x" name="xn" onfocus="changeColor('aqua',this.id); camcol('aqua',this);"onBlur="changeColor('white',this.Name); camcol('white',this)"size="20">
<input type="text" id="y" name="yn" onfocus="changeColor('aqua',this.id); camcol('aqua',this);"onBlur="changeColor('white',this.Name); camcol('white',this)"size="20">
<input type="text" id="z" name="zn" onfocus="changeColor('aqua',this.id); camcol('aqua',this);"onBlur="changeColor('white',this.Name); camcol('white',this)"size="20">
</form>
</body>
</html>