/*
* Author:      Marco Kuiper (http://www.marcofolio.net/)
*/

var currentSelection = 0;
var currentUrl = '';

google.load("jquery", "1.3.1");
google.setOnLoadCallback(function()
{
	// Register keypress events on the whole document
	$(document).keypress(function(e) {
		switch(e.keyCode) { 
			// User pressed "up" arrow
			case 38:
				navigate('up');
			break;
			// User pressed "down" arrow
			case 40:
				navigate('down');
			break;
			// User pressed "enter"
			case 13:
				if(currentUrl != '') {
					//window.location = ;
					
					var u = currentUrl.replace("javascript:selectThis('",'');
					var p = u.replace("');",'');
					selectThis(p);
				}
			break;
			default:
			
				var ssearch = document.getElementById("search").value;
				
				if(ssearch != ""){
					
  					http.open("GET", "searchResults.php?search="+ escape(ssearch), true);
  					http.onreadystatechange = handleHttpResponse;
  					http.send(null);
				
				}
			
			break;
		}
	});
	
	function doFill(){
				
		var ssearch = document.getElementById("search").value;
		if(ssearch != ""){
  			http.open("GET", "searchResults.php?search="+ escape(ssearch), true);
  			http.onreadystatechange = handleHttpResponse;
  			http.send(null);
		}	
	}
	
	// Add data to let the hover know which index they have
	for(var i = 0; i < $("#menu ul li a").size(); i++) {
		$("#menu ul li a").eq(i).data("number", i);
	}
	
	// Simulote the "hover" effect with the mouse
	$("#menu ul li a").hover(
		function () {
			currentSelection = $(this).data("number");
			setSelected(currentSelection);
		}, function() {
			$("#menu ul li a").removeClass("itemhover");
			currentUrl = '';
		}
	);
});

function navigate(direction) {
	// Check if any of the menu items is selected
	if($("#menu ul li .itemhover").size() == 0) {
		currentSelection = -1;
	}
	
	if(direction == 'up' && currentSelection != -1) {
		if(currentSelection != 0) {
			currentSelection--;
		}
	} else if (direction == 'down') {
		if(currentSelection != $("#menu ul li").size() -1) {
			currentSelection++;
		}
	}
	setSelected(currentSelection);
}

function setSelected(menuitem) {
	$("#menu ul li a").removeClass("itemhover");
	$("#menu ul li a").eq(menuitem).addClass("itemhover");
	currentUrl = $("#menu ul li a").eq(menuitem).attr("href");
}

function handleHttpResponse() {
  if (http.readyState == 4) {
	  
	  	//alert(http.responseText);
  		document.getElementById("dsearch").innerHTML = http.responseText;
  		//var aj = document.getElementById("ajax");
  		//aj.innerHTML = "";
		
  }
}

function selectThis(val){
	
		document.getElementById("search").value = val;
		document.getElementById("dsearch").innerHTML = '';
	
}


function getHTTPObject() {
  var xmlhttp;
  /*@cc_on
  @if (@_jscript_version >= 5)
    try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (E) {
        xmlhttp = false;
      }
    }
  @else
  xmlhttp = false;
  @end @*/
  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
    try {
      xmlhttp = new XMLHttpRequest();
    } catch (e) {
      xmlhttp = false;
    }
  }
  return xmlhttp;
}
var http = getHTTPObject(); // We create the HTTP Object