RollOver Feature on an Image in your website

Rollover is a feature in this effect when you move mouse on a
image then image change on that button instantly.This is possible with the help combination
of java script and css using inline mode



     <img src=a1.jpg height=100px width=100px
        onmouseover="this.src='a2.jpg'"
        onmouseout="this.src='a1.jpg'" />

   <img src=a1.jpg height=100px width=100px
        onmouseover="this.src='a2.jpg';this.style.border='outset 5px blue'"
        onmouseout="this.src='a1.jpg';this.style.border=''" />