function showHide(ele) {

var container = ele.parentNode;
var img = container.getElementsByTagName("span");
if (ele.nextSibling.style.display == "none")
{
hidep = ele.parentNode.parentNode.getElementsByTagName("p");
for (var i = 0; i < hidep.length; i++) { 
    hidep[i].style.display = 'none'; 
    }
chgimg = ele.parentNode.parentNode.getElementsByTagName("span");
for (var i = 0; i < chgimg.length; i++) { 
    chgimg[i].innerHTML = "<img src='/images/plus.gif' />"; 
    }
ele.nextSibling.style.display = 'block';
img.innerHTML = "<img src='/images/minus.gif' />";
}
else if (ele.nextSibling.style.display == "block")
{
ele.nextSibling.style.display = 'none';
img.innerHTML = "<img src='/images/plus.gif' />";
}
}