window.onload = function(){
  searchbox.value = "Enter keyword(s)...";
  searchbox.setAttribute("changed","false");
  searchbox.onclick = function(){
    if(this.getAttribute("changed") == "false")
      this.value = "";
  }
  searchbox.onblur = function(){
    if(this.value == "" || this.getAttribute("changed") == "false"){
       this.value = "Enter keyword(s)...";
       this.setAttribute("changed","false");
       this.style.color = "#8EAAC2";
    }
  }
  searchbox.onkeydown = function(){
    this.setAttribute("changed","true");
    this.style.color = "#4F7196";
  }
}