<script language="javascript">
function abc(a,b)
{
alert(a+":"+b)
};
function bc()
{
var xx=document.all.t;
for(i=0;i<xx.length;i++)
{
 var a=String(xx[i].onclick);

var m=a.substring(27,a.length-3).replace(/\'/g,"").split(",");
abc(m[0],m[1]);
}
};
</script>

<input type="checkbox" name="tt" onclick="bc()"/>
<table>
<tr><td><input type="checkbox" name="t" onclick="abc('tt1','t1')"/></td><td>abc</td></tr>
<tr><td><input type="checkbox" name="t" onclick="abc('tt2','t2')"/></td><td>abc</td></tr>
<tr><td><input type="checkbox" name="t" onclick="abc('tt3','t3')"/></td><td>abc</td></tr>
</table>