function toHide(obj) {
	var theobj=document.getElementById(obj);
	theobj.style.display="none";
}

function toShow(obj) {
	var theobj=document.getElementById(obj);
	theobj.style.display="block";
}
function ShowHide(obj) {
   	var theobj=document.getElementById(obj);
   	if(theobj.style.display=="none")
		theobj.style.display="block";
	else
      theobj.style.display="none";
}