// functions.js

function runajax(objID, serverPage)
{
	//Create a boolean variable to check for a valid Internet Explorer instance.
	var xmlhttp = false;

	//Check if we are using IE.
	try {
		//If the JavaScript version is greater than 5.
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		//If not, then use the older ActiveX object.
		try {
			//If we are using Internet Explorer.
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (E) {
			//Else we must be using a non-IE browser.
			xmlhttp = false;
		}
	}
	// If we are not using IE, create a JavaScript instance of the object.
	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
		xmlhttp = new XMLHttpRequest();
	}

	var obj = document.getElementById(objID);
	obj.innerHTML = "<b>Loading...</b>";
	xmlhttp.open("GET", serverPage);
	xmlhttp.onreadystatechange = function() {
		if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
			obj.innerHTML = xmlhttp.responseText;
		}
	}
	xmlhttp.send(null);
}



function ajaxform(thisform,formhandler)
{
    //General Purpose Ajax form submitter.
    //Written by Carl(bag) @ Thybag.co.uk

	//if(validForm()){
		// Set up data variable
		var formdata = "";

		// Set up Ajax request variable
		try {xmlhttp = window.XMLHttpRequest?new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");}  catch (e) { alert("Error: Could not load page.");}
		// Loop through form fields
		for (i=0; i < thisform.length; i++)
		{
			 //Build Send String
			 if(thisform.elements[i].type == "text"){ //Handle Textbox's
					  formdata = formdata + thisform.elements[i].name + "=" + escape(thisform.elements[i].value) + "&";
			 }else if(thisform.elements[i].type == "textarea"){ //Handle textareas
					  formdata = formdata + thisform.elements[i].name + "=" + escape(thisform.elements[i].value) + "&";
			 }else if(thisform.elements[i].type == "checkbox"){ //Handle checkbox's
					 formdata = formdata + thisform.elements[i].name + "=" + thisform.elements[i].checked + "&";
			 }else if(thisform.elements[i].type == "radio"){ //Handle Radio buttons
					  if(thisform.elements[i].checked==true){
						 formdata = formdata + thisform.elements[i].name + "=" + thisform.elements[i].value + "&";
					  }
			 }else{
					  //finally, this should theoretically this is a select box.
					  formdata = formdata + thisform.elements[i].name + "=" + escape(thisform.elements[i].value) + "&";
			 }
		}

		//Send Ajax Request
		xmlhttp.onreadystatechange = function(){
				   //Check page is completed and there were no problems.
				   if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200)) {
						  //What to do once the form is submitted - to inform the user.
						  document.getElementById("contents").innerHTML = xmlhttp.responseText;
				   }
		}
		//Make connection
		xmlhttp.open("POST", formhandler);
		//Set Headers
		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		//Send data
		xmlhttp.send(formdata);
		//stops form from submitting normally
		return false;
	//}
}

function MM_swapImgRestore() { //v3.0
		  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
		  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
			var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
			if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
		  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
			d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
		  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
		  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
		  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
		  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
		   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function validForm() {
	var allGood = true;
	var allTags = document.getElementsByTagName("*");

	for (var i=0; i<allTags.length; i++) {
		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) {
			thisTag.focus();
			if (thisTag.nodeName == "INPUT") {
				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;
				default:
					classBack += thisClass;
			}
			return classBack;
		}
	}
}


function imgRandomizer(){
	len = arguments.length;
	names = arguments;
		var rand=Math.floor(Math.random()*len);
		return names[rand];

}