function togglevis(itemid) {
	var item = document.getElementById(itemid);
	if (item.style.display == '') {
		item.style.display = 'none';
	}
	else if (item.style.display == 'none') {
		item.style.display = '';
	}
}

function getQuerystring(key, default_)
{
  if (default_==null) default_=""; 
  key = key.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regex = new RegExp("[\\?&]"+key+"=([^&#]*)");
  var qs = regex.exec(window.location.href);
  if(qs == null)
    return default_;
  else
    return qs[1];
}

function showHideDiv(divid) {
	$("#"+divid).animate({"height": "toggle"}, { duration: 1000 });
}