问根据servlet中的值更改表行的颜色

EN

.tg  {border-collapse:collapse;border-spacing:0;border-color:#999;}
.tg td{font-size:12px;padding:3px 13px 3px 13px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#999;color:#444;background-color:#fff}
.tg th{font-size:12px;font-weight:normal;padding:10px 5px 10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#999;color:#fff;background-color:#deb6db}
tr:hover td.tg-5hgy {
		background-color: #777;
		color: white;		
}   

<%

int total = dao.count();
ArrayList<VO> alist = dao.getMemberList();
int size = alist.size();	
int size2 = size;

final int ROWSIZE = 20;
final int BLOCK = 5;


int pg = 1;

if(request.getParameter("pg")!=null) {
	pg = Integer.parseInt(request.getParameter("pg"));
}

int end = (pg*ROWSIZE);

int allPage = 0;

int startPage = ((pg-1)/BLOCK*BLOCK)+1;
int endPage = ((pg-1)/BLOCK*BLOCK)+BLOCK;

allPage = (int)Math.ceil(total/(double)ROWSIZE);

if(endPage > allPage) {
	endPage = allPage;
}

size2 -=end;
if(size2 < 0) {
	end = size;
}

%>

<table class="tg" align="center">

	<tr >
	    <th class="tg-031e">aaa</th>
	    <th class="tg-031e">bbb </th>
	    <th class="tg-031e">ccc</th>    

  	</tr>     
   <%
		if (total == 0) {
	%>      
		<tr>
			<td colspan="13" style="text-align:center">No have contents.</td>
		</tr>    	
     <%
		} else {	
				for (int i = ROWSIZE * (pg - 1); i < end; i++) {
					VO vo = alist.get(i);					
					int idx = vo.getNum();
					String colorValue="#ffffff";
					application.log(vo.getLevel()+"");
					 if(vo.getLevel() == 30 ) {  
						colorValue = "#d0c1d0";						
					}else{
						colorValue = "#ffffff";		
					}%>
		 			<style>		 			
					.tg .tg-5hgy{vertical-align: middle;background-color:<%=colorValue%>;text-align:center}
					</style> 
	
	<tr>
    <td class="tg-5hgy"  id="num">
    <%=vo.getNum();%>
    </td>
    <td class="tg-5hgy"  id="level">
    <%=vo.getLevel();%>
    </td>
    <td class="tg-5hgy"  id="time">
    <%=vo.getTime();%>
    </td>
</tr>
</table>