Print another webpage or image from this page javascript

Pretty simple solution for this I found with slight modifcation.

Place this code with 'otherpage.jpg' as the one you want to print, whether an image or webpage (could even be pdf) and it will prompt for printing when clicked on the button below the code

<script type="text/javascript" >
function printExternal() {
printWindow = window.open(  "otherpage.jpg","mywindow");
setTimeout('printWindow.print()', 2000);
setTimeout('printWindow.close()', 2000);
}
</script>

As you see the first step is to open the page (can be html,  pdf, jpg or other image, etc).
Second step (after short wait of 2 seconds) start the print built-in javascript function.
Third and final is to close that window after print or canceled.

Now here's how to trigger the external print:
<input type='button' value='print' onclick="printExternal()">


The code can also be modified to have much more customized pages (this is how I use it):
<script type="text/javascript" >
function printExternal(str) {
printWindow = window.open(  str,"mywindow");
setTimeout('printWindow.print()', 2000);
setTimeout('printWindow.close()', 2000);
}
</script>

As you see there is now str instead of direct image or file, this allows the function to take it dynamically from page code, now using your favourite server side language you can generate the files from a database (which is what I do in my case with php):

<?php
//this function to get the files
$files = files();

//loop through them
foreach($files as $file){ ?>
<input type='button' value='print' onclick="printExternal(<?php  echo $file ?>)">
<?php } ?>

anyway hope this php didn't confuse you but should help in basic scenarios too.

Comment and let me know if you have questions, comments etc.