white比gray黑?
下边的代码如下,大家copy过去存为htm,img不管它   
 用ie或firefox打开   
 会发现asdfasdf上边的那条线比下边的那条线要白一些   
 可是我的代码是这么写的:   
 上边的那条线:   
 25行: 
  <TD   colspan= "3 "   align= "center "   style= "border-bottom-color:gray;border-bottom-width:1px ">    
 下边的那条线:   
 45行:   
  <TD   colspan= "3 "   height= "1px "   style= "border-top-color:white;border-top-width:1px ">    
 white居然比gray还黑?   
 这是啥问题?     
  <!DOCTYPE   HTML   PUBLIC    "-//W3C//DTD   HTML   4.0   Transitional//EN ">  
  <html>  
  <head>  
  <meta   http-equiv= "Content-Type "   content= "text/html;   charset=gb2312 ">  
  <style   type= "text/css ">  
  <!-- 
 .text   {font-size:   12px;width:100%;height:19px; 
 background-color:white;background-Image:url(image/textbg.gif)} 
 body   {   text-align:   center;font-size:12px;background-image:url(image/graybg.gif);margin:0;} 
 td{border-width:0px} 
 -->  
  </style>  
  </head>  
  <body>  
  <TABLE   width= "869px "   style= "background-color:black "   border= "1 ">  
  <tr>  
 	 <TD   rowspan= "4 "   style= "border-right-color:gray;border-right-width:1px ">  
 		 <IMG   SRC= "image/logo.gif ">  
 	 </TD>  
 	 <td   colspan= "3 ">  
 		  
 	 </td>  
  </tr>  
  <TR>  
 	 <TD   colspan= "3 "   align= "center "   style= "border-bottom-color:gray;border-bottom-width:1px ">  
 		 <IMG   SRC= "image/home.gif ">  
 		 <IMG   SRC= "image/sperate.gif ">  
 		 <IMG   SRC= "image/customer.gif ">  
 		 <IMG   SRC= "image/sperate.gif ">  
 		 <IMG   SRC= "image/service.gif ">  
 		 <IMG   SRC= "image/sperate.gif ">  
 		 <IMG   SRC= "image/tech.gif ">  
 		 <IMG   SRC= "image/sperate.gif ">  
 		 <IMG   SRC= "image/view.gif ">  
 		 <IMG   SRC= "image/sperate.gif ">  
 		 <IMG   SRC= "image/contact.gif ">  
 	 </TD>  
  </TR>  
  <TR>  
 	 <TD   width= "200px "   align= "right ">  <IMG   SRC= "image/bgimage.GIF ">  <IMG   SRC= "image/left.gif ">  </td>  
 	 <td   width= "469px ">  <div   class= "text "> asdfasdf </div>  </td>  
 	 <TD   width= "200px ">  <IMG   SRC= "image/right.gif ">  <IMG   SRC= "image/bgimageright.gif ">  </TD>  
  </TR>  
  <TR>  
 	 <TD   colspan= "3 "   height= "1px "   style= "border-top-color:white;border-top-width:1px ">  
 	  
 	 </TD>  
  </TR>  
 	 <td   colspan= "4 ">  
 		 <IMG   SRC= "image/blank.gif ">  
 	 </td>  
  </TABLE>  
  <body>  
  </html>
------解决方案--------------------设置下边框,不要设上边框的,设上边框会把上面的TR的下边框也带出来,并且还是黑色,所以两个混合了就比较黑了,也不知道浏览器为什么这么搞? 
  <!DOCTYPE HTML PUBLIC  "-//W3C//DT