window.onload = initForms;

addOnload(makeRequest);
addOnload(initAll);
addOnload(OpenFile);
addOnload(initForms);

function addOnload(newFunction){
	var oldOnload = window.onload;
	
	if (typeof oldOnload == "function") {
		window.onload = function() {
			if (oldOnload){
				oldOnload();
			}
			newFunction();
		}
	}
	else{
		window.onload = newFunction;
	}
}


var usedNum= new Array(15);
// Get the HTTP Object

function getHTTPObject(){   
if (window.ActiveXObject) 
return new ActiveXObject("Microsoft.XMLHTTP");   
else if (window.XMLHttpRequest) return new XMLHttpRequest();   
else {      alert("Your browser does not support AJAX.");      
return null;   }
}

// Change the value of the outputText field

function setOutput(){    
if(httpObject.readyState == 4){       
 var images = httpObject.responseText;
 var sddpics = images.split(' ');
 for (var num=0;   num<8;   num++)
	{	
	var photoNum = sddpics.length - 4;

	
	var randomNum
	do{
	randomNum = Math.floor((Math.random() * photoNum));
	}
	
	while(usedNum[randomNum]);
	var photoid = "pix" + num;
	usedNum[randomNum]= true;
 document.getElementById(photoid).src = "../photos/" + sddpics[randomNum+2];
	}
} 
 } 
 // Implement business logic    
 function makeRequest(){        
 httpObject = getHTTPObject();    
 if (httpObject != null) {        
 httpObject.open("GET", "../images.php?page="+Math.floor((Math.random() * 9999)), true);       
  httpObject.send(null);        
   httpObject.onreadystatechange = setOutput;    
   }
   }

   var httpObject = null;
   
function getNewNum(){
	Math.floor((Math.random() * photoNum));
	}
	
//menu

function initAll() {
	var allLinks = document.getElementsByTagName("a");
	
	for (var i=0; i<allLinks.length; i++) {
		if (allLinks[i].className.indexOf("menuLink") > -1) {
			allLinks[i].onclick = function() {return false;}
			allLinks[i].onmouseover = toggleMenu;
		}
	}
}

function toggleMenu() {
	var startMenu = this.href.lastIndexOf("/")+1;
	var stopMenu = this.href.lastIndexOf(".");
	var thisMenuName = this.href.substring(startMenu,stopMenu);

	document.getElementById(thisMenuName).style.display = "block";

	this.parentNode.className = thisMenuName;
	this.parentNode.onmouseout = toggleDivOff;
	this.parentNode.onmouseover = toggleDivOn;	
}

function toggleDivOn() {
	document.getElementById(this.className).style.display = "block";
}

function toggleDivOff() {
	document.getElementById(this.className).style.display = "none";
}


var xhr = false;

function OpenFile(){
	document.getElementById("words").onkeyup=getNewFile;
}
function getNewFile(){
	fileRequest(this.href);
	return false;
}
function fileRequest(url){
	if (window.XMLHttpRequest){
		xhr = new XMLHttpRequest();
	}
	else {
		if (window.ActiveXObject){
			try {
				xhr = new ActiveXObject("Microsolf.XMLHTTP");
			}
			catch (e) {}
		}
	}
	if (xhr) {
		xhr.onreadystatechange =showContents;
		xhr.open("GET", "../searchbackend.php?admin=yes&words="+document.getElementById("words").value, true);
		xhr.send(null);
	}
	else {
		document.getElementById("outputText").innerHTML = "Sorry, but I could'nt create an XMLHttpRequest";
	}
}
function showContents(){
	if (xhr.readyState ==4){
		if (xhr.status == 200){
			var outMsg = (xhr.responseXML && xhr.responseXML.contentType=="text/xml")? xhr.responseXML.getElementsByTagName("choices")[0].textContent : xhr.responseText;
		}
		else{
			var outMsg ="there was a problem with the request" +xhr.status;
		}
		document.getElementById("outputText"). innerHTML =outMsg;
	}
}

/* form validation*/

function initForms() {
	for (var i=0; i< document.forms.length; i++) {
		document.forms[i].onsubmit = function() {return validForm();}
	}
}

function validForm() {
	var allGood = true;
	var allTags = document.getElementsByTagName("*");
	for (var i=0; i<allTags.length; i++) {
		if (allTags[i].nodeName== "TEXTAREA" || allTags[i].nodeName== "INPUT" ){
		if (!validTag(allTags[i])) {
			allGood = false;
		}
		}
	}
	return allGood;

	function validTag(thisTag) {

			var outClass = "";
			var allClasses = thisTag.className.split(" ");
			for (var j=0; j<allClasses.length; j++) {
			outClass += validBasedOnClass(allClasses[j]) + " ";
			thisTag.className = outClass;

		if (outClass.indexOf("invalid") > -1) {
			invalidLabel(thisTag.parentNode);
			thisTag.focus();
			if (thisTag.nodeName == "INPUT" || "TEXTAREA") {
				thisTag.select();
			}
			return false;
		}
			
		
		}
		return true;
		
		function validBasedOnClass(thisClass) {
			var classBack = "";
		
			switch(thisClass) {
				case "":
				case "invalid":
					break;
				case "reqd":
					if (allGood && thisTag.value == "") classBack = "invalid ";
					classBack += thisClass;
					break;
				case "radio":
					if (allGood && !radioPicked(thisTag.name)) classBack = "invalid ";
					classBack += thisClass;
					break;
				case "isNum":
					if (allGood && !isNum(thisTag.value)) classBack = "invalid ";
					classBack += thisClass;
					break;
				case "isZip":
					if (allGood && !isZip(thisTag.value)) classBack = "invalid ";
					classBack += thisClass;
					break;
				case "email":
					if (allGood && !validEmail(thisTag.value)) classBack = "invalid ";
					classBack += thisClass;
					break;
				default:
					if (allGood && !crossCheck(thisTag,thisClass)) classBack = "invalid ";
					classBack += thisClass;
			}
			return classBack;
		}
				
		function crossCheck(inTag,otherFieldID) {
			if (!document.getElementById(otherFieldID)) return false;
			return (inTag.value != "" || document.getElementById(otherFieldID).value != "");
		}
		
		function radioPicked(radioName) {
			var radioSet = "";

			for (var k=0; k<document.forms.length; k++) {
				if (!radioSet) {
					radioSet = document.forms[k][radioName];
				}
			}
			if (!radioSet) return false;
			for (k=0; k<radioSet.length; k++) {
				if (radioSet[k].checked) {
					return true;
				}
			}
			return false;
		}
		
		function isNum(passedVal) {
			if (passedVal == "") {
				return false;
			}
			for (var k=0; k<passedVal.length; k++) {
				if (passedVal.charAt(k) < "0") {
					return false;
				}
				if (passedVal.charAt(k) > "9") {
					return false;
				}
			}
			return true;
		}
		
		function isZip(inZip) {
			if (inZip == "") {
				return true;
			}
			return (isNum(inZip));
		}
		
		function validEmail(email) {
			var invalidChars = " /:,;";
		
			if (email == "") {
				return false;
			}
			for (var k=0; k<invalidChars.length; k++) {
				var badChar = invalidChars.charAt(k);
				if (email.indexOf(badChar) > -1) {
					return false;
				}
			}
			var atPos = email.indexOf("@",1);
			if (atPos == -1) {
				return false;
			}
			if (email.indexOf("@",atPos+1) != -1) {
				return false;
			}
			var periodPos = email.indexOf(".",atPos);
			if (periodPos == -1) {	
				return false;
			}
			if (periodPos+3 > email.length)	{
				return false;
			}
			return true;
		}
		
		function invalidLabel(parentTag) {
			if (parentTag.nodeName == "DIV") {
				parentTag.className += " invalid";
			}
		}
	}
}

function doorSet() {
	if (this.checked) {
		document.getElementById("twoDoor").checked = true;
	}
}