< body >

this is a checkbox < input  type ="checkbox"  style ="position:absolute;clip:rect(5,14,14,5);background:red"  id ="myCheckbox" >

< span  style ="position:absolute;border:solid 1px blue;width:9px;height:9px;left:expression(myCheckbox.offsetLeft+5);top:expression(myCheckbox.offsetTop+5)" > <!--   --> </ span >

</ body >

< br > 单选和复选按钮的背景是红色的 < br >

< input  type ="checkbox"  name ="checkbox"  value ="checkbox"  style ="background-color: #FF0000;border:1px dashed lime;" >

< input  type ="radio"  name ="radiobutton"  value ="radiobutton"  style ="background-color: #FF0000" >  

< style > ... .mycheckbox{...}{

position:absolute;clip: rect(6 17 17 6);}</style>

<input type=checkbox  class='mycheckbox'>&nbsp;&nbsp;&nbsp;&nbsp;this is a Checkbox