var State = "", City = "", zip = "";
$(document).ready(function() {
    var StateN = document.getElementById("state");
    State = StateN.options[StateN.selectedIndex].value;
    var CityN = document.getElementById("txtcity");
    City = CityN.value;
    var ZipN = document.getElementById("txtZip");
    zip = ZipN.value;
    var link1 = document.getElementById("link1");
    link1.setAttribute("href", "tourinfo.aspx" + "?s=" + State + "&c=" + City + "&z=" + zip);

}
    );
function getState() {
    var StateN = document.getElementById("state");
    var link1 = document.getElementById("link1");
    State = StateN.options[StateN.selectedIndex].value;
    link1.setAttribute("href", "tourinfo.aspx" + "?s=" + State + "&c=" + City + "&z=" + zip);

}
function getCity() {
    var CityN = document.getElementById("txtcity");
    var link1 = document.getElementById("link1");
    City = CityN.value;
    link1.setAttribute("href", "tourinfo.aspx" + "?s=" + State + "&c=" + City + "&z=" + zip);
}
function getZip() {

    var ZipN = document.getElementById("txtZip");
    var link1 = document.getElementById("link1");
    zip = ZipN.value;
    link1.setAttribute("href", "tourinfo.aspx" + "?s=" + State + "&c=" + City + "&z=" + zip);
}