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_visibility_inline(id) {
   var e = document.getElementById(id);
   if(e.style.display != 'none')
      e.style.display = 'none';
   else
      e.style.display = 'inline';
}
    
 function show_inline(id) {
   var e = document.getElementById(id);
      e.style.display = 'inline';
}
    
 function show(id) {
   var e = document.getElementById(id);
      e.style.display = 'block';
}
    
function hide(id) {
   var e = document.getElementById(id);
      e.style.display = 'none';
}

function toggle_disable(id) {
	  if(document.getElementById(id).disabled)
	  {
		  	document.getElementById(id).disabled=false;
	  }
	  else{
		  	document.getElementById(id).disabled=true;
	  }
}

function set_disable(id,val) {
	   	document.getElementById(id).disabled=val;
	 
}

function array_hide(fo)
{
	for (i in fo)
	{
		hide(fo[i]);
	}
	return true;
}