// FORM FOCUS AND BLUR
////////////////////////////////////////////////////
window.onload = function() {
	
  document.getElementById('search_box').onfocus = function() {
    this.className = "form_focus_on";
				if(this.value == "enter a keyword") {
					this.value = "";
				}
  }
		
		document.getElementById('search_box').onblur = function() {
    this.className = "form_focus_off";
				if(this.value == "") {
					this.value = "enter a keyword";
				}
  }

}