function searchzip() {
   document.getElementById("searchzip").style.display="block";
   document.getElementById("searchcity").style.display="none";
   document.getElementById("search-zip-text").style.backgroundColor = "Yellow";
   document.getElementById("search-city-text").style.backgroundColor = "White";
}
function searchcity() {
   document.getElementById("searchzip").style.display="none";
   document.getElementById("searchcity").style.display="block";
   document.getElementById("search-zip-text").style.backgroundColor = "White";
   document.getElementById("search-city-text").style.backgroundColor = "Yellow";
}