CORE ATTRIBUTE:  onmouseup
onmouseup="action"
Available in versions: 4.0
HTML 4.0 tag compatibility: All tags except applet, base, basefront, bdo, br, font, frame, frameset, head, html, iframe, isindex, meta, param, script, style, title
 
The onmouseup core attribute is an event handler that is associated with the releasing up portion of a click of the mouse while inside a selected HTML tag (element). In other words, the mouse up event occurred while the HTML element was in focus. Every time you release the mouse up, while in the element, the script code of the onmouseup is executed. This script can also call functions or subroutines which contain code that you want to run when this event occurs.
 
The four other similar core attributes are: onmousedown, onmousemove, onmouseover, and onmouseout.
 
In this example, simply place the mouse inside the button element, click down, then release up. As soon as you release up, an alert appears with a message.
 
Code:
<input type="button" onmouseup="JavaScript: alert( 'onmouseup event' )" value="Click And Release The Mouse While Inside This Button!">
 
Output:

Copyright 1999-2001 by Infinite Software Solutions, Inc. All rights reserved.
Trademark Information