function toggle(obj) {
 var el = document.getElementById(obj);
 if(el.style.display != ''){
 el.style.display = (el.style.display != 'none' ? 'none' : '' );}
}

function toggle1(obj) {
 var el1 = document.getElementById(obj);
 if(el1.style.display != 'none'){
 el1.style.display = (el1.style.display != 'none' ? 'none' : '' );}
}

function toggle2(obj) {
 var el = document.getElementById(obj);
 el.style.display = (el.style.display != 'none' ? 'none' : '' );
}