OK, what I did seems to prevent 90% of users on the web from downloading the images. I took the two functions from the sample theme and added them to my theme, added Megachip's hack, then added a little right click script to my theme template.html. As the fullsize window is opened by a java script, they must have java script enabled to view the image, but at the same time another java script prevents them from right clicking and viewing source.
<script language=JavaScript>
<!--
//Disable right mouse click Script
//By Maximus (maximus@nsimail.com) w/ mods by DynamicDrive
//For full source code, visit http://www.dynamicdrive.com
var message="Function Disabled!";
///////////////////////////////////
function clickIE4(){
if (event.button==2){
alert(message);
return false;
}
}
function clickNS4(e){
if (document.layers||document.getElementById&&!document.all){
if (e.which==2||e.which==3){
alert(message);
return false;
}
}
}
if (document.layers){
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById){
document.onmousedown=clickIE4;
}
document.oncontextmenu=new Function("alert(message);return false")
// -->
</script>
The next thing I will try is to add another table to the mix that I can throw a watermark into the mix to at least have my watermark on the image if they do the Print Screen copy to paste into Paint.
I'm also going to try one of the script redirectors to prevent them from looking at the cached copy of the page to find the URL of the image.