<div id="rectangle" onmouseover="her()" onmouseout="ovher()"></div>
#rectangle{
width:100px;
height:100px;
background-color:red;
}
var hRectangle=document.getElementById('rectangle').style;
function her()
{
hRectangle.width='200px';
hRectangle.height = '200px';
hRectangle.background='#ccc';
}
function ovher()
{
hRectangle.width='100px';
hRectangle.height = '100px';
hRectangle.background='red';
}
