How to make over-out event with js

Intoduction :-

Hii Friends...

Today I explain how to make over-out event with the help of java-script. In asp.net there are many events like mouse-over,mouse-down,key press etc. So I explain this with the code.

Step : 1   The Code goes here :->
<script>
    function b(x) {
        x.style.height = "250px";
        x.style.width = "250px";
    }
    function n(x) {
        x.style.height = "150px";
        x.style.width = "150px";
    }
</script>
<img onmouseover="b(this)" onmouseout="n(this)" src="img.jpg" width="32" height="32" />
  DEMO:-

                                                        1) When mouse out

                                                        2) When mouse over