html-checkbox (simple) default example

html

<input type="checkbox"

 style=" width: 13px;
height: 13px;
padding: 0;
margin:0;
vertical-align: middle;
position: relative;
top: -1px;
*overflow: hidden;"
id="admin" name="admin"

 value="1"
class="" >


Update 

s2=document.getElementById('admin').checked ? 1 :0


Retrieval

document.getElementById('admin').checked=data[0][2]=='1';