function openClose(id)
{
var obj = "";
if(document.getElementById)
obj = document.getElementById(id).style;
else if(document.all)
obj = document.all[id];
else if(document.layers)
obj = document.layers[id];
else
return 1;

if(obj.display == "")
obj.display = "none";
else if(obj.display != "none")
obj.display = "none";
else
obj.display = "block";
}