BBcode Image Resizer with CSS. Enlarged image onMouseover.
This code is very simple and will not affect page load speed.

DEMO (http://phim-film.com/diendan/test-forums/13324-bbcode-image-resizer-css.html#post20280)

Step 1:
Go to--->ACP--->Custom BB Codes--->Add new BBcode.
Title: BBcode Image Resizer with CSS
BB Code Tag Name: imgr
Replacement: <a class="thumbnail" href="#thumb"><img src="{param}" width="320px" height="240px" border="0" /><span><img src="{param}" /><br />Image</span></a>
Example: You Image link
Description: Image Resizer with CSS. Enlarged image onMouseover.
Use {option}: No

Click SAVE BBcode.

Step 2:
Go to--->ACP--->Styles & Templates--->Style Manager--->You Styles--->Main CSS--->Additional CSS Definitions
add this Code on the bottom of the window last



.thumbnail{
position: relative;
z-index: 0;
}

.thumbnail:hover{
background-color: transparent;
z-index: 50;
}

.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
background-color: lightyellow;
padding: 5px;
left: -1000px;
border: 1px dashed gray;
visibility: hidden;
color: black;
text-decoration: none;
}

.thumbnail span img{ /*CSS for enlarged image*/
border-width: 0;
padding: 2px;
}

.thumbnail:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;
top: 0;
left: 60px; /*position where enlarged image should offset horizontally */

}



it is completed :)