Cropping an image with PHP or Javascript -

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i have image called 'progressbar.png'. there way crop image, php or javascript, each time page loads image crop depending on progress percentage , loaded page. example, if image 200px wide, @ 25% progress image cropped 50px wide.

make div, set background of div image, , manipulate div's width whatever want.

html:

<div id="progressbar"></div>

css:

#progressbar{ background:url(progressbar.png) top left; height:progressbarheightpx; }

javascript:

document.getelementbyid('progressbar').style.width='50px'

or done in php printing out width directly div:

<div id="progressbar" width="<?php echo $percent_done*200;?>px"></div>

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