function sortlist(listing) {
var lb = document.getElementById(listing);
arrTexts = new Array();
arrValues = new Array();
arrOldTexts = new Array();


for(i=0; i<lb.length; i++)  {
  arrTexts[i] = lb.options[i].text;
  arrValues[i] = lb.options[i].value;
  arrOldTexts[i] = lb.options[i].text; 
}

arrTexts.sort();

for(i=0; i<lb.length; i++)
{
lb.options[i].text = arrTexts[i];
for(j=0; j<lb.length; j++)
{
if (arrTexts[i] == arrOldTexts[j])
{
lb.options[i].value = arrValues[j];
j = lb.length;
}
}
} 
}

function trips()
	{
		if(document.te.trip[0].checked)
		{
			document.getElementById("dateto").style.visibility = "visible";
		}
		else if(document.te.trip[1].checked)
		{
			document.getElementById("dateto").style.visibility = "hidden";
			document.getElementById("retdate").value = "";
		}
		f_tcalHideAll ();
	}