二，禁止托拽：ondragstart="return false"

三，禁止选择：onselectstart ="return false" onselect="document.selection.empty()" onmouseup="document.selection.empty()"

四，禁止拷贝：oncopy="document.selection.empty()" onbeforecopy="return false"

五，禁止保存：<noscript><iframe src=../../*></iframe></noscript>