大家帮忙看看，javascript与DOCTYPE冲突
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><div id="div1"><table border='0' width='330px' cellspacing='0' cellpadding='0'><tr><td style='height:20px;'>111111</td></tr><tr><td style='height:20px;'>222222</td></tr><tr><td style='height:20px;'>333333</td></tr></table></div><div id="temp1" style="visibility: hidden"></div> <script type="text/javascript" language="javascript">//<![CDATA[var diva = document.getElementById("div1");var tema = document.getElementById("temp1");var xx_a = 0;var marqueesHeight = 100; //内容区高度var stop_a = false; //这个变量控制是否停止滚动var preTop_a = 0; //这个变量用于判断滚动条是否已经到了尽头diva.noWrap = true; //这句表内容区不自动换行diva.style.width = 0 + "px"; //于是我们可以将它的宽度设为0，因为它会被撑大diva.style.height = marqueesHeight + "px";diva.style.overflowY = "hidden"; //滚动条不可见diva.onmouseover = function(){stop_a=true;}; //鼠标经过，停止滚动diva.onmouseout = function(){stop_a=false;}; //鼠标离开，开始滚动document.body.onload = init;function init(){ //初始化滚动内容while(parseInt(tema.offsetHeight) < parseInt(marqueesHeight)){tema.innerHTML += diva.innerHTML;}diva.innerHTML = tema.innerHTML + tema.innerHTML;setTimeout(scrollUpa2,1000);}function scrollUpa2(){setInterval(scrollUpa,2000);}function scrollUpa(){ //滚动条的驱动函数if(xx_a == 20){xx_a = 0;return;}if(stop_a == true) return; //如果变量"stopscroll"为真，则停止滚动preTop_a = parseInt(diva.scrollTop); //记录滚动前的滚动条位置diva.scrollTop += 1; //滚动条向下移动一个像素//如果滚动条不动了，则向上滚动到和当前画面一样的位置//当然不仅如此，同样还要向下滚动一个像素(+1)：if(preTop_a == parseInt(diva.scrollTop)){diva.scrollTop = tema.offsetHeight - marqueesHeight + 1;}xx_a += 1;setTimeout(scrollUpa,10);}//]]> </script></html><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head></head><body><div id="div1"> <table border='0' width='330px' cellspacing='0' cellpadding='0'> <tr><td style='height:20px;'>111111</td></tr> <tr><td style='height:20px;'>222222</td></tr> <tr><td style='height:20px;'>333333</td></tr> </table></div><div id="temp1" style="visibility: hidden"></div></body></html><script type="text/javascript" language="javascript">//<![CDATA[var diva = document.getElementById("div1");var tema = document.getElementById("temp1");var xx_a = 0;var marqueesHeight = 100; //内容区高度var stop_a = false; //这个变量控制是否停止滚动var preTop_a = 0; //这个变量用于判断滚动条是否已经到了尽头diva.noWrap = true; //这句表内容区不自动换行diva.style.width = 0 + "px"; //于是我们可以将它的宽度设为0，因为它会被撑大diva.style.height = marqueesHeight + "px";diva.style.overflowY = "hidden"; //滚动条不可见diva.onmouseover = function(){stop_a=true;}; //鼠标经过，停止滚动diva.onmouseout = function(){stop_a=false;}; //鼠标离开，开始滚动document.body.onload = init;function init(){ //初始化滚动内容while(parseInt(tema.offsetHeight) < parseInt(marqueesHeight)){tema.innerHTML += diva.innerHTML;}diva.innerHTML = tema.innerHTML + tema.innerHTML;setTimeout(scrollUpa2,1000);}function scrollUpa2(){setInterval(scrollUpa,2000);}function scrollUpa(){ //滚动条的驱动函数if(xx_a == 20){xx_a = 0;return;}if(stop_a == true) return; //如果变量"stopscroll"为真，则停止滚动preTop_a = parseInt(diva.scrollTop); //记录滚动前的滚动条位置diva.scrollTop += 1; //滚动条向下移动一个像素//如果滚动条不动了，则向上滚动到和当前画面一样的位置//当然不仅如此，同样还要向下滚动一个像素(+1)：if(preTop_a == parseInt(diva.scrollTop)){diva.scrollTop = tema.offsetHeight - marqueesHeight + 1;}xx_a += 1;setTimeout(scrollUpa,10);}//]]> </script>
[解决办法]
这种很常有，我还遇到docType和css冲突的咧。换个DOCTYPE
[解决办法]
你可以参考网上现有的，成功的不间断滚动的例子，应该是你的样式设置导致某些属性的值不能满足，如visibility:hidden等