/*

Changes the class of an item on an event.

*/

function change(id, newClass) {
	identity=document.getElementById(id);
	identity.className=newClass;
}

function getQueryVariable(variable) {
	var query = window.location.search.substring(1);
	var vars = query.split("&");
	for (var i=0; i<vars.length; i++) {
		var pair = vars[i].split("=");
		if (pair[0] == variable) {
			return pair[1];
		}
	}
}

function setTourClass() {
	var yearValue= getQueryVariable("year");
	if (yearValue == 2006) {
		change('stop2006', 'show');
		change('stop2005', 'hide');
		change('stop2004', 'hide');
		change('stop2007', 'hide');
	}
	if (yearValue == 2005) {
		change('stop2005', 'show');
		change('stop2006', 'hide');
		change('stop2004', 'hide');
		change('stop2007', 'hide');
	}
	if (yearValue == 2004) {
		change('stop2004', 'show');
		change('stop2006', 'hide');
		change('stop2005', 'hide');
		change('stop2007', 'hide');
	}
}