#禁止滚动事件
<select onmousewheel ="event.returnValue=false;return false;"> </select>
#2个框的滚动条同步滚动
onscroll="document.getElementById('divhead').scrollLeft = this.scrollLeft"
<select onmousewheel ="event.returnValue=false;return false;"> </select>
onscroll="document.getElementById('divhead').scrollLeft = this.scrollLeft"