var clickmessage = "Copyright SEP © You do not have permission to copy these images please contact us and ask for the picture you want.";

function disableclick(e) {
	if (document.all) {
		if (event.button==2||event.button==3) {
			if (event.srcElement.tagName=="IMG"){
			alert(clickmessage);
			return false;
			}	
		}
	}
	else if (document.layers) {
		if (e.which == 3) {
		alert(clickmessage);
		return false;
		}
	}
	else if (document.getElementById){
		if (e.which==3&&e.target.tagName=="IMG"){
		alert(clickmessage)
		return false
		}
	}
}

function BlockImages(){
	for(i=0;i<document.images.length;i++) {
		document.images[i].onmousedown=disableclick;
	}
}

if(document.all) {
	document.onmousedown = disableclick;
} else if(document.getElementById) {
	document.onmouseup = disableclick;
} else if(document.layers) {
	BlockImages();
}