这是你想做的吗?
jsFiddle here
HTML:
<table id="tbl">
<tr><td></td><td><img id="hom" src="http://png-2.findicons.com/files/icons/1261/sticker_system/128/home.png"></td><td></td></tr>
<tr>
<td>
<img id="swr" src="https://cdn1.iconfinder.com/data/icons/ecommerce-and-business-icon-set/256/software.png">
</td>
<td>
<img id="lgo" src="http://graph.facebook.com/1671019266/picture?type=large">
</td>
<td>
<img id="frm" src="http://wespenre.com/graphics/forum-icon.png">
</td>
</tr>
<tr id="tr2"><td></td><td><img id="abt" src="http://png-3.findicons.com/files/icons/730/soft/128/info.png"></td><td></td></tr>
</table>
javascript/jQuery:
/*
See these posts:
http://stackoverflow.com/questions/554273/changing-the-image-source-using-jquery
*/
var img_logo = $('#lgo');
$('img').hover(
function() {
var xx = $(this).attr('src');
img_logo.attr('src', xx);
},
function() {
img_logo.attr('src', "http://graph.facebook.com/1671019266/picture?type=large");
}
);