Not sure what you are looking for but following may help you to decide -
onmouseclick attribute of HTML element initiates some action predefined in a script associated with it, when user click on the element.
onmouseover attribute of HTML element initiates some action predefined in a script associated with it, when user moves the cursor into the boundary of the element.
onmouseout attribute of HTML element initiates some action predefined in a script associated with it, when user moves the mouse pointer any in any direction, irrespective of any mouse button actions on the element.
onmouseup attribute of an HTML element initiates some action predefined in a script associated with it, when user releases the mouse button while the cursor is positioned on the element.
onmousemove attribute of HTML element initiates some action predefined in a script associated with it, when user moves the mouse pointer any in any direction, irrespective of any mouse button actions on the element.
Example: Syntax for all cases are same...
<p onmouseup="myJsFunc();'">Hello, World</p>
