function showtooltip(name){
	h=document.getElementById(name);
	h.style.visibility='visible';
	he=h.offsetHeight-60;
	document.getElementById('tbr_'+name).style.height=he+'px';	
	document.getElementById('tbl_'+name).style.height=he+'px';	
}
function hidetooltip(name){
	document.getElementById(name).style.visibility='hidden';
	document.getElementById('tbr_'+name).style.height=0+'px';	
	document.getElementById('tbl_'+name).style.height=0+'px';	
}