// shield mouse and keyboard  
	document.oncontextmenu = new Function("return false;") // rightclick ÓÒ¼ü
	document.ondragstart = new Function("return false;")   // drag
	document.onselectstart = new Function("return false;") // select È«Ñ¡

	function testkey()
	{
		if(event.keyCode==66&&event.ctrlKey) return false; // Shield Ctrl+B
		if(event.keyCode==69&&event.ctrlKey) return false; // Shield Ctrl+E
		if(event.keyCode==72&&event.ctrlKey) return false; // Shield Ctrl+H
		if(event.keyCode==73&&event.ctrlKey) return false; // Shield Ctrl+I
		if(event.keyCode==78&&event.ctrlKey) return false; // Shield Ctrl+N
		if(event.keyCode==87&&event.ctrlKey) return false; // Shield Ctrl+W
//		if(event.keyCode==116) { event.keyCode=null;return false } // Shiel F5
		if(event.keyCode==122) { event.keyCode=null;return false } // Shield F11
	//	if(event.ctrlKey) return false;   // ctrl
	}
	document.onkeydown = testkey