var clickmessage='© Copyright image.'
	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 associateimages() {
		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) {
		associateimages()
	}