VML失效问题。
我在asp.net后台代码里往页面的 <div   id= "div1 "> </div> 里面写入下面的html，但是只显示了一部分的vml图象，很多都失效了。
div1.InnerHtml   =   " <v:group   ID= 'group1 '   style= 'WIDTH:700px;HEIGHT:500px '   coordsize= '4900,3500 '> "
        +   " <v:line   from= '200,100 '   to= '200,2700 '   style= 'Z-INDEX:8;POSITION:absolute '   strokeweight= '1pt '> "
+   " <v:stroke   StartArrow= 'classic '/> "
        +   " </v:line> "
        +   " <v:line   from= '200,2700 '   to= '4500,2700 '   style= 'Z-INDEX:8;POSITION:absolute '   strokeweight= '1pt '> "
+   " <v:stroke   EndArrow= 'classic '/> "
        +   " </v:line> "
        +   " <v:rect   style= 'WIDTH:4600px;HEIGHT:2900px '   coordsize= '21600,21600 '   fillcolor= 'white '   strokecolor= 'black '> "
+   " <v:shadow   on= 't '   type= 'single '   color= 'silver '   offset= '4pt,3pt '> </v:shadow> "
        +   " </v:rect> "
        +   " <v:shape   style= 'position:absolute;left:50;top:2650;WIDTH:1000px;HEIGHT:200px;z-index:8 '   coordsize= '21600,21600 '   fillcolor= 'white '> "
+   " <v:textbox   id= 'text1 '   inset= '3pt,0pt,3pt,0pt '   align= 'center '   style= 'font-size:10pt;v-text-anchor:bottom-center-baseline '> 0 </v:textbox> "
        +   " </v:shape> "
        +   " <v:line   from= '200   2650 '   to= '4500   2650 '   style= 'position:absolute;z-index:8 '> "
+   " <v:stroke   dashstyle= 'dot '   color= 'black '/> "
        +   " </v:line> "
        +   " <v:line   from= '200   2550 '   to= '4500   2550 '   style= 'position:absolute;z-index:8 '> "
+   " <v:stroke   color= '#c0c0c0 '> "
        +   " </v:line> "
        +   " <v:shape   style= 'position:absolute;left:0;top:2500;WIDTH:1000px;HEIGHT:200px;z-index:8 '   coordsize= '21600,21600 '   fillcolor= 'white '> "
+   " <v:textbox   id= 'tx1 '   inset= '3pt,0pt,3pt,0pt '   style= 'font-size:10pt;v-text-anchor:bottom-right-baseline '> 1 </v:textbox> "
        +   " </v:shape> "
        +   " <v:line   from= '200   2450 '   to= '4500   2450 '   style= 'position:absolute;z-index:8 '> "
+   " <v:stroke   dashstyle= 'dot '   color= 'black '/> "
        +   " </v:line> "
        +   " <v:line   from= '200   2350 '   to= '4500   2350 '   style= 'position:absolute;z-index:8 '> "