新闻滚动

<style type="text/css">
        *{margin: 0;padding: 0;}
        body {
            font-size: 12px;
            background-color: #FFF;
            overflow: hidden;
        }
        td{font-size:20px;color: #00FF99;}
        .t_data td {border: none;background-color: #fff0ff;height: 50px;padding-left: 2px;}
        .f_td {width: 80px;}
    </style>

<table border="0" width="100%" cellspacing="0" cellpadding="0">
            <tr>
                <td width="100%">
                    <div id="B1">
                        <div id="B2">
                            <table width="160" border="0" cellpadding="0" cellspacing="0"
                                bgcolor="#cccccc" style="margin-top: 0px;">
                                <tbody class="t_data">
                                    <tr><td nowrap class="f_td"><a href="#">baidu</a></td></tr>
                                    <tr><td nowrap class="f_td"><a href="#">alibaba</a></td></tr>
                                    <tr><td nowrap class="f_td"><a href="#">sina</a></td></tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </td>
            </tr>
        </table>

var marqueesHeightB1 = 50;//滚动高度
var stopscrollB1=false;
               var scrollElemB1=document.getElementById('B1');
               with(scrollElemB1){
                   style.width=164;
                   style.height=marqueesHeightB1;
                   style.overflow='hidden';
                   noWrap=true;
               }
               scrollElemB1.onmouseover=new Function('stopscrollB1=true');
               scrollElemB1.onmouseout=new Function('stopscrollB1=false');
               var preTopB1=0 , currentTopB1=0 , stoptimeB1=0 , leftElemB2=document.getElementById('B2');
               scrollElemB1.appendChild(leftElemB2.cloneNode(true));
               setTimeout('init_srolltextB1()',2000);
               function init_srolltextB1(){scrollElemB1.scrollTop=0;setInterval('scrollUpB1()',50);}
               function scrollUpB1(){
                   if(stopscrollB1){return;}
                   currentTopB1+=1;
                   if(currentTopB1==(marqueesHeightB1+1)) {
                       stoptimeB1+=1;currentTopB1-=1;
                       if(stoptimeB1==40) {
                           currentTopB1=0;stoptimeB1=0;
                       }
                   }else {
                       preTopB1=scrollElemB1.scrollTop;
                       scrollElemB1.scrollTop +=1;
                       if (preTopB1==scrollElemB1.scrollTop){
                           scrollElemB1.scrollTop=0;
                           scrollElemB1.scrollTop +=1;
                       }
                   }
               }