Sets or retrieves the x-coordinate of the mouse pointer's position relative to the client area of the window, excluding window decorations and scroll bars.
Sets or retrieves the y-coordinate of the mouse pointer's position relative to the client area of the window, excluding window decorations and scroll bars.
Sets or retrieves the y-coordinate, in pixels, of the mouse pointer's position relative to a relatively positioned parent element.
Remarks
The onmousewheel event is the only event that exposes the wheelDelta property. This property indicates the distance that the wheel button has rotated, expressed in multiples of 120. A positive value indicates that the wheel button has rotated away from the user. A negative value indicates that the wheel button has rotated toward the user. See the example below.
Example
The following example shows how to use the onmousewheel event and the wheelDelta parameter to expand and contract a picture in response to the wheel button being moved.
<HTML>
<HEAD>
<SCRIPT>
var count = 10;
function Picture()
{
count = Counting(count);
Resize(count);
return false;
}
function Counting(count){
if (event.wheelDelta >= 120)
count++;
else if (event.wheelDelta <= -120)
count--;
return count;
}
function Resize(count){
oImage.style.zoom = count + '0%';
}
</SCRIPT>
</HEAD>
<BODY>
<img id="oImage" src="Sample.jpg" onmousewheel="Picture()" width="283"
height="212" >
</BODY>
</HTML>
E>
This feature requires Microsoft® Internet Explorer 6 or later. Click the following icon to install the latest version. Then reload this page to view the sample.
