function ShowContent(id) {
document.getElementById(id).style.visibility = 'visible';
}
function HideContent(id) {
document.getElementById(id).style.visibility = 'hidden'; 
}
								


function dsp(loc){
   if(document.getElementById){
      var foc=loc.firstChild;
      foc=loc.firstChild.innerHTML?loc.firstChild:loc.firstChild.nextSibling;
      foc.innerHTML=foc.innerHTML=='+'?'-':'+';
      foc=loc.parentNode.nextSibling.style?loc.parentNode.nextSibling:loc.parentNode.nextSibling.nextSibling;
      foc.style.display=foc.style.display=='block'?'none':'block';
    }
}