window.onload = initAll;

function initAll()
{
	var numImages = document.images.length;
	
	for(i=0; i < numImages; i++)
	{
		document.images[i].oncontextmenu = disableContextMenu;
	}
}

function disableContextMenu(e)
{
	if(!e)
	{
		var e = window.event;
		e.returnValue = false;
	}
		
	return false;
}