function showHide(shID) {
          	if (document.getElementById(shID)) {
          		if (document.getElementById(shID+'-show').style.display != 'none') {
          			document.getElementById(shID+'-show').style.display = 'none';
          			document.getElementById(shID).style.display = 'block';
          		}
          		else {
          			document.getElementById(shID+'-show').style.display = 'inline';
          			document.getElementById(shID).style.display = 'none';
          		}
          	}
          }