function obj(id)
{
	if( document.getElementById(id) )
	   return document.getElementById(id);
	else
	   return false;
}

function goo(id)
{
	 if(document.getElementById('training'))
	 {
		 var gg = document.getElementById('training');
		 gg = gg.getElementsByTagName('div');
		 for (i = 0; i < gg.length; i++) 
		 {
			 if(gg[i].className=='sleep')
			 {
				 gg[i].style.display="none";
				 if(gg[i].id == id)
					gg[i].style.display="block";
			 }
		 }
		 if(document.getElementById('b_'+id))
	 	 {
			 var bb = document.getElementById('buttons');
			 bb = bb.getElementsByTagName('div');
			 for (i = 0; i < bb.length; i++) 
			 {
				 bb[i].className="";
				 if(bb[i].id == 'b_'+id)
					bb[i].className="act";
			 }
		 }
		 document.body.focus();
	 }
}