LI方法如何让内容靠左对齐
<STYLE   type=text/css>
.TabADS   .TasADSOn   {
FONT-WEIGHT:   bold;   BACKGROUND:     #ffe4a6   ;   CURSOR:   pointer;   COLOR:   #333;   TEXT-ALIGN:   center;margin:0px;       padding:0px;
}

.TabADS   LI   {
margin:0px;       padding:0px;PADDING-RIGHT:   0px;   PADDING-LEFT:   0px;   BACKGROUND:     #e4e4e4   ;   FLOAT:   left;   PADDING-BOTTOM:   0px;   WIDTH:   135px;   CURSOR:   pointer;   COLOR:   #333;   PADDING-TOP:   6px;   HEIGHT:   18px;   TEXT-ALIGN:   center
}
.report_left{       float:left;       width:400px;}  
</style>
<SCRIPT   language=javascript   type=text/javascript>
// <![CDATA[
function   Show_TabADSMenu(tabadid_num,tabadnum){
for(var   i=0;i <4;i++){document.getElementById( "tabadcontent_ "+tabadid_num+i).style.display= "none ";}
for(var   i=0;i <4;i++){document.getElementById( "tabadmenu_ "+tabadid_num+i).className= " ";}
document.getElementById( "tabadmenu_ "+tabadid_num+tabadnum).className= "TasADSOn ";
document.getElementById( "tabadcontent_ "+tabadid_num+tabadnum).style.display= "block ";
}
//]]>
</SCRIPT>
<tr> <td   colspan= "4 "> <table   width= "100% "   border= "0 "   cellspacing= "0 "   cellpadding= "0 ">
<tr> <td   >

<DIV   class=TabADS>
            <UL>
              <LI   class=TasADSOn   id=tabadmenu_10  
                onmousedown= "setTimeout( 'Show_TabADSMenu(1,0) ',300); "> 现金方式   </LI>
            <LI   id=tabadmenu_11  
                onmousedown= "setTimeout( 'Show_TabADSMenu(1,1) ',300); "> 非现金资产清偿方式   </LI>
                <LI   id=tabadmenu_12  
                onmousedown= "setTimeout( 'Show_TabADSMenu(1,2) ',300); "> 债务转资本方式   </LI>
            <LI   id=tabadmenu_13  
                onmousedown= "setTimeout( 'Show_TabADSMenu(1,3) ',300); "> 修改其他债务条件方式   </LI> </UL> </DIV>
</td> </tr>
            <tr> <td> <DIV   class=TabADSCon>
            <UL   id=tabadcontent_10>   <li> <div       class= "report_left ">   <table   width= "100% "   border= "0 "   cellspacing= "0 "   cellpadding= "0 ">
    <tr>
        <td> <input   type= "checkbox "   name= "IS_CASH "   value=y>   现金方式 </td>
    </tr>
这段程序如何能对齐到屏幕左边?

------解决方案--------------------