var oldName='';
var intPrevCommand = 0;
var intPrevCoAuthor = 0;

function showHideComments(id, objA, name) {
var obj = document.getElementById(id);
 if(!obj) return false;             /*alert(obj.style.display); */
 if (obj.style.display == 'none') { 
  obj.style.display='block'; 
 }
 else { obj.style.display = 'none'; }
 if (objA) { 
	if (oldName=='') {
	  oldName=objA.innerHTML; objA.innerHTML=name; 
      objA.parentNode.className='close';
	} else {objA.innerHTML=oldName; oldName='';objA.parentNode.className='open';  }
 }

}

function ChangeOptions(opt1, opt2, opt3) {
 var objCoAuthor = document.getElementById('coauthor_box');
 var objCommand = document.getElementById('command_box');
 if ((opt1 || opt2)&& (objCoAuthor.style.display=='block')) {
  showHideComments('coauthor_box');
 }
 if ((opt1 || opt3)&& (objCommand.style.display=='block')) {
  showHideComments('command_box');
 }
 if (opt2 && (objCommand.style.display=='none')) showHideComments('command_box');
 if (opt3 && (objCoAuthor.style.display=='none')) showHideComments('coauthor_box');
}