function showhide(element1) {
   element1 = document.getElementById(element1);
   if (element1.style.display == 'block' || element1.style.display == '')
	  element1.style.display = 'none';
   else
	  element1.style.display = 'block';
   return;
}

function show(element1){
	element1 = document.getElementById(element1);
	element1.style.display = '';
}

function hide(element1){
   	element1 = document.getElementById(element1);
	element1.style.display = 'none';
}