求一个javascript 右键复制网页链接的菜单

有个朋友给我这代码我不会用,希望大家帮我看看! 能不能帮我写个我要的js
//取文字
function getText()
{
var srcEvent = external.menuArguments.event;
var EventElement;
if(typeof(srcEvent.clientX) == "undefined")
{
EventElement = external.menuArguments.document.elementFromPoint (srcEvent.pointerX, srcEvent.pointerY);
}
else
{
EventElement = external.menuArguments.document.elementFromPoint (srcEvent.clientX, srcEvent.clientY);
}
var srcAnchor = EventElement;
return srcAnchor.outerText;
}
//取连接
function getURL()
{
var srcEvent = external.menuArguments.event;
var EventElement;
if(typeof(srcEvent.clientX) == "undefined")
{
EventElement = external.menuArguments.document.elementFromPoint (srcEvent.pointerX, srcEvent.pointerY);
}
else
{
EventElement = external.menuArguments.document.elementFromPoint (srcEvent.clientX, srcEvent.clientY);
}
var srcAnchor = EventElement;
return srcAnchor.href;
}