<a href="picName.jpg" id=pic1 onclick="savepic();return false;" style="cursor:hand">点击下载</a>
function savepic() { if (document.all.a1 == null) { objIframe = document.createElement("IFRAME"); document.body.insertBefore(objIframe); objIframe.outerHTML = "<iframe name=a1 style='400px;hieght:300px' src=" + imageName.href + "></iframe>"; re = setTimeout("savepic()", 1) } else { clearTimeout(re) pic = window.open(imageName.href, "a1") pic.document.execCommand("SaveAs") document.all.a1.removeNode(true) } }