var clickmessage="請尊重智慧財產權！";

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