html 怎么插入向上的箭头,如何在html中插入箭头？

这是一个图像，用css的样式。正如你所看到的超级链接有class='external'和class='internal'

#content .bodytext a.internal { padding-right: 7px; background: transparent url(/img/intlink.gif) no-repeat top right; }

#content .bodytext a.internal,

#content .bodytext a.internal:link,

#content .bodytext a.internal:active,

#content .bodytext a.internal:visited { color: #730; text-decoration: none; }

#content .bodytext a.internal:hover { color: #A50; text-decoration: underline; }

#content .bodytext a.internal img { display: none; }

/* inter-links */

#content .bodytext a.external { padding-right: 7px; background: transparent url(/img/extlink.gif) no-repeat top right; }

#content .bodytext a.external img { display: none; }

/* inter-links */

#content .bodytext a.email { padding-right: 7px; background: transparent url(/img/exteml.gif) no-repeat top right; }

#content .bodytext a.email img { display: none; }