如何设置指定大小的行距(或则调整行距)
在 <iframe   style= "width:   100%;   height:100;line-height:30px; "   marginwidth= "0 "         marginheight= "0 "   frameborder= "1 "   id= "MsgFrame "      src= "about:blank ">  </iframe>  
 编写的在线编辑器里,如何修改编辑器里文字的行距?
------解决方案-------------------- <html>  
  <head>  
  <meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">  
  <title> +  = </title>  
  <script type= "text/javascript ">  
     function init() { 
     	var html =  ' <html>  <head> \n ' 
     	+  ' <style> \n ' 
     	+  'p { margin:2pt 2pt 2pt 2pt; }\n '//改变它改变行距 
     	+  ' </style> \n ' 
       +  ' </head> \n ' 
       +  ' <body contenteditable= "true " topmargin=1 leftmargin=1>  ' 
       +  'aaaaaa ' 
       +  ' </body> \n ' 
       +  ' </html> \n '; 
       var editdoc = document.all[ "MsgFrame "].contentWindow.document; 
       editdoc.open(); 
     editdoc.write(html); 
     editdoc.close(); 
     } 
  </script>    
  </head>  
  <body onload= "init() ">  
  <form>  
  <iframe style= "width: 100%; height:100;line-height:30px; " marginwidth= "0 "   marginheight= "0 " frameborder= "1 " id= "MsgFrame "  src= "about:blank ">  </iframe>  
  </form>  
  </body>  
  </html>