//-----------------------------------------------------------------------------------------------------
function zPopWindow(zURL,zName,xSize,ySize,zOptLevel) {
	// a zOptLevel value of 1 yields a window with no ornamentation, bars, menus etc
	// a zOptLevel value of 2 yields the same window as 1, but with scroll bars
	// a zOptLevel value of 3 (or nothing, or anything but 1 or 2) yields a window with full menus, etc
	W = screen.width;
	H = screen.height;
    if (navigator.appVersion.lastIndexOf('Safari') != -1) {
		xSize += 0;
		ySize += 1;
    }
	if (!xSize) { xSize = W / 1.25; }
	if (!ySize) { ySize = H / 1.25; }
	if (!zName) { zName = "NewWindow"; }
	xPos = (W - xSize) / 2;
	yPos = (H - ySize) / 2;

	if (zOptLevel == 1) {
		var zWinOpts = 'height=' + ySize + ',width=' + xSize + ',left=' + xPos + ',top=' + yPos + 'screenX=' + xPos + ',screenY=' + yPos;
	} else if  (zOptLevel == 2) {
		var zWinOpts = 'height=' + ySize + ',width=' + xSize + ',resizable=yes,scrollbars=yes,left=' + xPos + ',top=' + yPos + 'screenX=' + xPos + ',screenY=' + yPos;
    } else {
		var zWinOpts = 'height=' + ySize + ',width=' + xSize + ',resizable=yes,toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,left=' + xPos + ',top=' + yPos + 'screenX=' + xPos + ',screenY=' + yPos;
	}

	var PopWin = window.open(zURL,zName,zWinOpts);

}
//-----------------------------------------------------------------------------------------------------

//-----------------------------------------------------------------------------------------------------
// This is the implementation of SimpleSwap
// by Jehiah Czebotar
// Version 1.1 - June 10, 2005
//
// Include this script on your page
// then make image rollovers simple like:
// <img src="/images/ss_img.gif" oversrc="/images/ss_img_over.gif">
//
// http://jehiah.com/archive/simple-swap
// 


function SimpleSwap(el,which){
	el.src=el.getAttribute(which || "origsrc");
}

function SimpleSwapSetup(){
	var x = document.getElementsByTagName("img");
	for (var i=0;i<x.length;i++){
		var oversrc = x[i].getAttribute("oversrc");
		if (!oversrc) continue;
		// preload image
		// comment the next two lines to disable image pre-loading
		x[i].oversrc_img = new Image();
		x[i].oversrc_img.src=oversrc;
		// set event handlers
		x[i].onmouseover = new Function("SimpleSwap(this,'oversrc');");
		x[i].onmouseout = new Function("SimpleSwap(this);");
		// save original src
		x[i].setAttribute("origsrc",x[i].src);
	}
}

var PreSimpleSwapOnload =(window.onload)? window.onload : function(){};
window.onload = function(){PreSimpleSwapOnload(); SimpleSwapSetup();}
//-----------------------------------------------------------------------------------------------------

//-----------------------------------------------------------------------------------------------------
// Form Validation Functions
// 

function zConfirmRedirect(prompt,okURL,cancelURL) {
	var confirmResult;
	// ask the user to choose either OK or Cancel
	confirmResult = confirm(prompt);
	// switch to a new URL based on the user's choice
	if (confirmResult) {
		window.location.href = okURL;
	} else {
		window.location.href = cancelURL;
	}
}

function AddUserFormValidate(theForm) {
	var why = "";
	why += isEmpty(theForm.firstname.value,"the user's first name");
	why += isEmpty(theForm.lastname.value,"the user's last name");
	why += checkEmail(theForm.email.value);
	why += isEmpty(theForm.username.value,"a username");
	why += isEmpty(theForm.password.value,"a password");
	if (why != "") {
		alert(why);
		return false;
	}
	return true;
}

// e-mail

function checkEmail(strng) {
	var error = "";
	if (strng == "") {
		error = "You must enter an e-mail address.\n";
	}
	var emailFilter=/^.+@.+\..{2,3}$/;
	if (!(emailFilter.test(strng))) { 
		error = "You must enter a valid e-mail address.\n";
	} else {
		//test email for illegal characters
		var illegalChars = /[\(\)\,\;\:\\\"\[\]]/;
		if (strng.match(illegalChars)) {
			error = "The e-mail address contains illegal characters.\n";
		}
	}
	return error;    
}

// required textbox

function isEmpty(strng,messg) {
	var error = "";
	if (strng.length == 0) {
		error = "You must enter "+messg+".\n"
	}
	return error;     
}

//-----------------------------------------------------------------------------------------------------

//-----------------------------------------------------------------------------------------------------
// Tooltip Functions
// 



// Extended Tooltip Javascript
// copyright 9th August 2002, 3rd July 2005
// by Stephen Chapman, Felgall Pty Ltd

// permission is granted to use this javascript provided that the below code is not altered
var DH = 0;
var an = 0;
var al = 0;
var ai = 0;
if (document.getElementById) {
	ai = 1;
	DH = 1;
} else {
	if (document.all) {
		al = 1;
		DH = 1;
	} else {
		browserVersion = parseInt(navigator.appVersion);
		if ((navigator.appName.indexOf('Netscape') != -1) && (browserVersion == 4)) {
			an = 1;
			DH = 1;
		}
	}
}
function fd(oi, wS) {
	if (ai) return wS ? document.getElementById(oi).style:document.getElementById(oi);
	if (al) return wS ? document.all[oi].style: document.all[oi];
	if (an) return document.layers[oi];
}
function pw() {
	return window.innerWidth != null? window.innerWidth: document.body.clientWidth != null? document.body.clientWidth:null;
}
function mouseX(evt) {
	if (evt.pageX) {
		return evt.pageX;
	} else if (evt.clientX) {
		return evt.clientX + (document.documentElement.scrollLeft ?  document.documentElement.scrollLeft : document.body.scrollLeft);
	} else {
		return null;
	}
}
function mouseY(evt) {
	if (evt.pageY) {
		return evt.pageY;
	} else if (evt.clientY) {
		return evt.clientY + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);
	} else {
		return null;
	}
}
function popUp(evt,oi) {
	if (DH) {
		var wp = pw();
		ds = fd(oi,1);
		dm = fd(oi,0);
		st = ds.visibility;
		if (dm.offsetWidth) {
			ew = dm.offsetWidth;
		} else if (dm.clip.width) {
			ew = dm.clip.width;
		}
		if (st == "visible" || st == "show") {
			ds.visibility = "hidden";
 		} else {
 			tv = mouseY(evt) + 20;
			lv = mouseX(evt) - (ew/4);
			if (lv < 2) {
				lv = 2;
			} else if (lv + ew > wp) {
				lv -= ew/2;
			}
			if (!an) {
				lv += 'px';
				tv += 'px';
			}
			ds.left = lv;
			ds.top = tv;
			ds.visibility = "visible";
		}
	}
}