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/*
JavaScript Bible, Fourth Edition
by Danny Goodman
John Wiley & Sons CopyRight 2001
*/
<HTML>
<HEAD>
<TITLE>addBehavior() and removeBehavior() Methods</TITLE>
<SCRIPT LANGUAGE="JavaScript">
var myPBehaviorID
function turnOn() {
myPBehaviorID = document.all.myP.addBehavior("makeHot.htc")
setInitialColor()
}
function setInitialColor() {
if (document.all.myP.readyState == "complete") {
var select = document.forms[0].colorChoice
var color = select.options[select.selectedIndex].value
document.all.myP.setHotColor(color)
} else {
setTimeout("setInitialColor()", 500)
}
}
function turnOff() {
document.all.myP.removeBehavior(myPBehaviorID)
}
function setColor(select, color) {
if (document.all.myP.hotColor) {
document.all.myP.setHotColor(color)
} else {
alert("This feature is not available. Turn on the Behavior first.")
select.selectedIndex = 0
}
}
function showBehaviorCount() {
var num = document.all.myP.behaviorUrns.length
var msg = "The myP element has " + num + " behavior(s). "
if (num > 0) {
msg += "Name(s): \r\n"
for (var i = 0; i < num; i++) {
msg += document.all.myP.behaviorUrns[i] + "\r\n"
}
}
alert(msg)
}
</SCRIPT>
</HEAD>
<BODY>
<H1>addBehavior() and removeBehavior() Method Lab</H1>
<HR>
<P ID="myP">This is a sample paragraph. After turning on the behavior,
it will turn your selected color when you mouse down anywhere in this
paragraph.</P>
<FORM>
<INPUT TYPE="button" VALUE="Switch On Behavior" onClick="turnOn()">
Choose a 'hot' color:
<SELECT NAME="colorChoice" onChange="setColor(this, this.value)">
<OPTION VALUE="red">red
<OPTION VALUE="blue">blue
<OPTION VALUE="cyan">cyan
</SELECT><BR>
<INPUT TYPE="button" VALUE="Switch Off Behavior" onClick="turnOff()">
<P><INPUT TYPE="button" VALUE="Count the URNs" onClick="showBehaviorCount()"></P>
</BODY>
</HTML>
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