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Help! I need a javascript expert

Can someone please take a look at my javascript and tell me what's wrong
with it. The script is suppose to move words and pics, but I can't get it to
work. Thanks.

JC

<html>
<head>
<!--
New Perspectives on HTML, XHTML, and DHTML
Tutorial 11
Tutorial Case

Avalon Books
Author:
Date: 4/5/2006

Filename: avalon.htm
Supporting files: ab.jpg, fiction.jpg, nfiction.jpg, scripts.js,
styles.css
-->
<title>Avalon Books</title>
<link href="styles.css" rel="stylesheet" type="text/css" />

<script src="scripts.js" type="text/JavaScript"></script>
<script type="text/javascript">

W=(winWidth()-620)/2;
H=(winHeight()-300)/2;
function placeObjects() {
placeIt("avalon", W+175,H+10);
placeIt("books",W+175,H+10);
placeIt("ab",W+230,H+40);
placeIt("fiction",W+5,H+5);
placeIt("nfiction",W+475,H+5);
hideIt("ab");
hideIt("ficti;on")
hideIt("nfiction");
moveAvalon();
}

function moveAvalon() {
var y=yCoord("avalon");
if (y <= H+260) {
shiftIt("avalon",0,10);
shiftIt("books",0,10);
setTimeout("moveAvalon()",30);
} else {
moveBooks();
}

}

function moveBooks() {
var x=xCoord("books");
if (x <= W+320) {
shiftIt("books",10,0);
setTimeout("moveBooks()",50);
} else {
showObjects();

}
}

function showObjects() {
setTimeout("showIt('ab')",500);
setTimeout("showIt('fiction')",1000);
setTimeout("showIt('nfiction')",1500);
}
</script>
</head>

<body onload="placeObjects()">

<div id="avalon">
AVALON
</div>

<div id="books">
BOOKS
</div>

<div id="ab">
<a href="#">
<img src="ab.jpg" alt="Click to enter store" />
</a>
</div>

<div id="fiction">
<img src="fiction.jpg" alt="" /><br />
<b>AB Sales Rank: #1<br />
Fiction</b><br />
<i>Before the Fall</i><br />Jeffrey Unwin
</div>

<div id="nfiction">
<img src="nfiction.jpg" alt="" /><br />
<b>AB Sales Rank: #1<br />
Nonfiction</b><br />
<i>Vietnam Memoirs</i><br />Gen. John Hartford
</div>

</body>
</html>
Apr 12 '06 #1
1 2453
John Russell wrote:
Hi John,

You might consider using a more descriptive subject next posting. :-)

Can someone please take a look at my javascript and tell me what's wrong
with it. The script is suppose to move words and pics, but I can't get it
to work. Thanks.

JC

<html>
<head>
<!--
New Perspectives on HTML, XHTML, and DHTML
Tutorial 11
Tutorial Case

Avalon Books
Author:
Date: 4/5/2006

Filename: avalon.htm
Supporting files: ab.jpg, fiction.jpg, nfiction.jpg, scripts.js,
styles.css
-->
<title>Avalon Books</title>
<link href="styles.css" rel="stylesheet" type="text/css" />

<script src="scripts.js" type="text/JavaScript"></script>
What is included here?

Maybe the missing placeIt function?
<script type="text/javascript">

W=(winWidth()-620)/2;
H=(winHeight()-300)/2;
function placeObjects() {
placeIt("avalon", W+175,H+10);
placeIt("books",W+175,H+10);
placeIt("ab",W+230,H+40);
placeIt("fiction",W+5,H+5);
placeIt("nfiction",W+475,H+5);
hideIt("ab");
hideIt("ficti;on")
Is that a typo?
hideIt("nfiction");
moveAvalon();
}

function moveAvalon() {
var y=yCoord("avalon");
if (y <= H+260) {
shiftIt("avalon",0,10);
shiftIt("books",0,10);
setTimeout("moveAvalon()",30);
} else {
moveBooks();
}

}

function moveBooks() {
var x=xCoord("books");
if (x <= W+320) {
shiftIt("books",10,0);
setTimeout("moveBooks()",50);
} else {
showObjects();

}
}

function showObjects() {
setTimeout("showIt('ab')",500);
setTimeout("showIt('fiction')",1000);
setTimeout("showIt('nfiction')",1500);
}
</script>
</head>

<body onload="placeObjects()">

<div id="avalon">
AVALON
</div>

<div id="books">
BOOKS
</div>

<div id="ab">
<a href="#">
<img src="ab.jpg" alt="Click to enter store" />
</a>
</div>

<div id="fiction">
<img src="fiction.jpg" alt="" /><br />
<b>AB Sales Rank: #1<br />
Fiction</b><br />
<i>Before the Fall</i><br />Jeffrey Unwin
</div>

<div id="nfiction">
<img src="nfiction.jpg" alt="" /><br />
<b>AB Sales Rank: #1<br />
Nonfiction</b><br />
<i>Vietnam Memoirs</i><br />Gen. John Hartford
</div>

</body>
</html>

As far as I can tell this is what happens:
1) onLoad in the bodytag calls function placeObjects()
2) in placeObjects() two missing functions are called:
- placeIt()
- hideIt()

I have no clue how these functions look or what they are doing.

So the detective work stops here.

If you want to debug your code, run it in Firefox and keep the
Javascriptconsole open.
It contains errors with descriptions, and that is the way to go if you want
to debug your code.

Regards,
Erwin Moller
Apr 12 '06 #2

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