Question

I have 4 image button containing a image. on mouse over i have to change the image(i.e load a new image on the button). Here is the code.

<div class ="submit" id="submit" >
    <input  type="image" src="dump.png" value="Dumb" class ="Dumb" id="Dumb" onclick="posting_by_user('Dumb')" />
    <input  type="image" src="informative.png" value="Informative" class ="Informative" id="Informative" onclick="posting_by_user('Informative')"/>
    <input  type="image" src="brilliant.png" value="Brilliant" class ="Brilliant" id="Brilliant" onclick="posting_by_user('Brilliant')"/>
    <input  type="image" src="cool.png" value="Cool" class ="Cool" id="Cool" onclick="posting_by_user('Cool')"/>
</div>

Here I have loaded dump.png, informative.png, brilliant.png and cool.png. on mouse over on each button i have to change the image.

Answer 1

<input  type="image" src="dump.png" value="Dumb" class ="Dumb" id="Dumb" onclick="posting_by_user('Dumb')" onmouseover="changeImg.call(this)" />

function changeImg(){
this.setAttribute("src","newImageFileName.jpg");
}

Segregating your code from html is always advised.. this answer will be helpful as it is cleaner and good for debugging..