function onn(id1, id2){
document.getElementById(id1).className='tab_on';
if (document.getElementById(id2).name == 'ask'){
document.getElementById(id2).src='http://seenjeem.makcdn.com/images/askon.gif';
}else if(document.getElementById(id2).name == 'ans'){
document.getElementById(id2).src='http://seenjeem.makcdn.com/images/anson.gif';
}else {
document.getElementById(id2).src='http://seenjeem.makcdn.com/images/expon.gif';
}

}
function off(id1, id2){
document.getElementById(id1).className='tab_off';
if (document.getElementById(id2).name == 'ask'){
document.getElementById(id2).src='http://seenjeem.makcdn.com/images/askoff.gif';
}else if(document.getElementById(id2).name == 'ans'){
document.getElementById(id2).src='http://seenjeem.makcdn.com/images/ansoff.gif';
}else {
document.getElementById(id2).src='http://seenjeem.makcdn.com/images/expoff.gif';
}


}