/*
JavaScript Bible, Fourth Edition
by Danny Goodman
Publisher: John Wiley & Sons CopyRight 2001
ISBN: 0764533428
*/
<HTML>
<HEAD>
<TITLE>Color Changer 3</TITLE>
<SCRIPT LANGUAGE="JavaScript">
var regularLabels = ["Reds","Greens","Blues"]
var naturalLabels = ["Apples","Leaves","Sea"]
function setRegularLabels(list) {
var optGrps = list.getElementsByTagName("OPTGROUP")
for (var i = 0; i < optGrps.length; i++) {
optGrps[i].label = regularLabels[i]
}
}
function setNaturalLabels(list) {
var optGrps = list.getElementsByTagName("OPTGROUP")
for (var i = 0; i < optGrps.length; i++) {
optGrps[i].label = naturalLabels[i]
}
}
function seeColor(list) {
var newColor = (list.options[list.selectedIndex].value)
if (newColor) {
document.bgColor = newColor
}
}
</SCRIPT>
</HEAD>
<BODY onUnload="document.forms[0].reset()">
<FORM>
<P>Choose a background color:
<SELECT name="colorsList" onChange="seeColor(this)">
<OPTGROUP ID="optGrp1" label="Reds">
<OPTION value="#ff9999">Light Red
<OPTION value="#ff3366">Medium Red
<OPTION value="#ff0000">Bright Red
<OPTION value="#660000">Dark Red
</OPTGROUP>
<OPTGROUP ID="optGrp2" label="Greens">
<OPTION value="#ccff66">Light Green
<OPTION value="#99ff33">Medium Green
<OPTION value="#00ff00">Bright Green
<OPTION value="#006600">Dark Green
</OPTGROUP>
<OPTGROUP ID="optGrp3" label="Blues">
<OPTION value="#ccffff">Light Blue
<OPTION value="#66ccff">Medium Blue
<OPTION value="#0000ff">Bright Blue
<OPTION value="#000066">Dark Blue
</OPTGROUP>
</SELECT></P>
<P>
<INPUT TYPE="radio" NAME="labels" CHECKED
onClick="setRegularLabels(this.form.colorsList)">Regular Label Names
<INPUT TYPE="radio" NAME="labels"
onClick="setNaturalLabels(this.form.colorsList)">Label Names from Nature</P>
</FORM>
</BODY>
</HTML>
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