don’t want users to be able to save image

You can simply use a script like below to prevent a right click but it is far away from fool proof. You can still look in the source code to get the image location and download it or just dave the web page. You can use a Watermark like from Digimarc which still does not matter when printed. One thing that you do is use some slicer tool, that slices the image in like 100 tiles and puts it in a table, user will have a hard time putting it together. But still nothing is impossible. Though here the script.

<script language="JavaScript"> <!--
var message="Right click disabled"; // Message for the alert box

function click(e) {
if (document.all) {
if (event.button == 2) {
alert(message);
return false;
}
}
if (document.layers) {
if (e.which == 3) {
alert(message);
return false;
}
}
}
if (document.layers) {
document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;
// --> </script>

mzz don't get the concept , i can save all those images :p