function checkAll(cb,frm) {
if (cb.checked == true) {
for (var i=0;i<frm.elements.length;i++) 	{
var e = frm.elements[i];
if ((e.type=='checkbox') && !e.disabled) 	{
e.checked =	true;
}
}
}
else {
for (var i=0;i<frm.elements.length;i++) {
var e = frm.elements[i];
if ((e.type=='checkbox') && !e.disabled) 	{
e.checked =	false;
}
}
}
}