Code for "No Right Click" on Forums

[MacroPhotoPro]

Hi;

I am running an image-hosting forum and would be interested in a hack that I could protect images displayed on showthread.php (forum display thread default) from a right-click save. The following javascripting isn't working:

$("#vfIMG_main_pic").bind("mousedown", MainPicMouseDown);
	$("#slideshow_pic").bind("mousedown", MainPicMouseDown);

function MainPicMouseDown(event) {
	switch(event.which) {
		case 3:
			alert("This image is protected by legal copyright and is the property of its owner.");
			break;
		default:
			// do nothing
	}
}

What code would you recommend to disable right-clicking and display the message: This image is protected by legal copyright and is the property of its owner ?

Would be grateful for any input,

Jack