function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }

/*function toggle_visibility2(id) {
 var hire = document.getElementById('hire');      
 var develop = document.getElementById('develop');
 var onboard = document.getElementById('onboard');
 var retain = document.getElementById('retain');
 var transition = document.getElementById('transition');
 hire.style.display = 'none';
 onboard.style.display = 'none';
 develop.style.display = 'none';
 transition.style.display = 'none';
 retain.style.display = 'none';
 var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }
*/
function toggle_visibility2(id){
	var e = document.getElementById(id);
	if(e.style.display == 'block')
		e.style.display = 'none';
	else
		e.style.display = 'block';
	var ids = new Array('hire','develop','onboard','retain','transition');
	for (var i =0; i < ids.length; i = i + 1){
		if (ids[i] != id){
			document.getElementById(ids[i]).style.display = 'none';
		}
	}
}