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'; 
} 
}}