<SCRIPT language=JavaScript> <!-- var msg = "This page requires version 4 or later of\n Netscape Navigator or Internet Explorer" var dyn = (document.layers || document.all) ? true : alert(msg); var nav = (document.layers) ? true : false; var iex = (document.all) ? true : false; var lft = 10; var pos = 10; var stp = 10; var spd = 150; var upr = -390; var lwr = 30; var tim; function scroll_up() //窗口向上滚动 { if(pos > upr) pos -= stp; do_scroll(pos); tim = setTimeout("scroll_up()", spd); }
function scroll_dn() ////窗口向上滚动 { if(pos < lwr) pos += stp; do_scroll(pos); tim = setTimeout("scroll_dn()", spd); }