function showItem(id)
{if(document.getElementById(id).style.display=='block')
{document.getElementById(id).style.display='none';}
else
{document.getElementById(id).style.display='block';}}

function showAllContent(groupName)
{var i=1;var showItem=document.getElementById(groupName+i);while(showItem!=null)
{showItem.style.display='block';i++;showItem=document.getElementById(groupName+i);}}

function hideAllContent(groupName)
{var i=1;var showItem=document.getElementById(groupName+i);while(showItem!=null)
{showItem.style.display='none';i++;showItem=document.getElementById(groupName+i);}}