function getSelectedYear()
{
	
	var selectedyear;
	
	// get the current URL
	var url = window.location.toString();
	//get the parameters
	url.match(/\?(.+)$/);
	var params = RegExp.$1;
	// split up the query string and store in an
	// associative array
	var params = params.split("&");
	var queryStringList = {};

	for(var i=0;i<params.length;i++)
	{
		var tmp = params[i].split("=");
		queryStringList[tmp[0]] = unescape(tmp[1]);
	}
 
	for(var i in queryStringList)
	{
		selectedyear = queryStringList[i];
	}
	//alert(selectedyear);
    if(selectedyear != 'undefined')
	{
		var flag = false;
		for(k = 1 ; k < document.yearForm.nasa_facility.options.length; k++)
		{
			var text = document.yearForm.nasa_facility.options[k].text;
			if(text == selectedyear)
			{
				document.yearForm.nasa_facility.options[k].selected = 'true';
				document.yearForm.selectedyear.value=selectedyear;
				flag = true;
				break;
			}
		}

		if(!flag)
			document.yearForm.nasa_facility.options[0].selected = 'true';
	}
}
 
function browsearchive(url)
{
	var year = document.yearForm.selectedyear.value;
	//alert('in browsearchive' + url + ' and year == ' + year );
	
	if(year != null && year != '')
		document.location.href=url + "?year=" + year;
	else
		document.location.href=url;
}


document.observe('contentloaded', function() {
	var selectbox = document.getElementById("selectboxdiv");
	if (selectbox)
	{
		getSelectedYear();
	}
},false);