sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);/**
 * @author My IT Guy
 * @version 1.2
 *  - Updated May 20, 2009
 */
var cancelForm = false;
function validateForm() {
	if (cancelForm) { return true; }
	missing = "";
	var pass = [];
	var y = 0;
	var tags = new Array('input','textarea','select');
	for (a=0;a<tags.length;a++) {
		inps = document.getElementsByTagName(tags[a]);
		for (x=0;x<inps.length;x++) {
			if ((inps[x].className.indexOf("req")!=-1) && (elementVisible(inps[x]))){
				if ((inps[x].value=="") || (inps[x].value=="NULL")) {
					missing+=" - "+(((inps[x].alt!=undefined) && (inps[x].alt!='')) ? inps[x].alt : inps[x].name)+"\n";
					inps[x].className+=' reqSkipped';
				}
				if (inps[x].type=='password') {
					pass[y++]=inps[x].value;
				} else if (inps[x].type=='radio') {
					if (validateRadio(inps[x]) == '') {
				  	missing += " - " + (((inps[x].alt != undefined) && (inps[x].alt != '')) ? inps[x].alt : inps[x].name) + "\n";
				  }
				}
			}
		}
	}
	if (missing!="") {
		alert("You must complete all required fields:\n"+missing);
		return false;
	}
	if (pass[0]!=pass[1]) {
		alert("Passwords do not match.");
		return false;
	}
	return true;
}

function validateRadio(el) {
	var form = getParentByTagName(el,'FORM');
	return getCheckedValue(document.forms[form.name].elements[el.name]);
}

function getParentByTagName(el,tagName) {
	el = el.parentNode;
	if (el.tagName == tagName) {
  	return el;
  } else {
  	return getParentByTagName(el,tagName);
  }
}

function elementVisible(jselement) {
	do {
		if (jselement.style.display.toUpperCase() == 'NONE') return false;
		jselement=jselement.parentNode;
	} while (jselement.tagName.toUpperCase() != 'BODY');
	return true;
}

function chooseProgram(n,prog) {
	var dob = document.forms['winter_program']['mem'+n+'_dob'].value;
	if (dob=='yyyy/mm/dd') { alert('You must first enter a valid Date of Birth.'); return; }
	if (prog!='') {
		prog = '&priceid='+prog;
	}
	popUpWindow('chooseProgram.php?mem=' + n + '&dob=' + dob + prog,800,600);
}

function addProgram(n,prog) {
	var dob = document.forms[0]['dob'].value;
	if (dob=='yyyy/mm/dd') { alert('You must first enter a valid Date of Birth.'); return; }
	if (prog!='') {
		prog = '&priceid='+prog;
	}
	popUpWindow('chooseProgram.php?prog=' + n + '&dob=' + dob + prog,800,600);
}

function validProg() {
	for (x=1;x<=6;x++) {
		if (document.forms['winter_program']['mem'+x+'_dob'].value!='yyyy/mm/dd') {
			if (document.forms['winter_program']['mem'+x+'_programPrice'].value=='') {
				alert('You must choose a program for each member.');
				return false;
			}
		}
	}
	return true;
}

/*
 * return the value of the radio button that is checked
 * return an empty string if none are checked, or
 * there are no radio buttons
 */
function getCheckedValue(radioObj) {
	if (!radioObj) {
  	return "";
  }
	var radioLength = radioObj.length;
	if (radioLength == undefined) {
  	if (radioObj.checked) {
  		return radioObj.value;
  	} else {
  		return "";
  	}
  }
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}

function popUpWindow(url,width,height) {
	window.open(url,'myitguyPopupWindow','width='+width+',height='+height+',scrollbars,resizable');
	return false;
}

/**
 * On page load, call specified function
 * @param functionName
 **/
function onPageLoad(functionName) {
  //check IE's proprietary DOM members.  If both are undefined, it's firefox (or at least, not IE)...
	if(document.uniqueID==document.expando) {
		// handle multiple functions
		fns = functionName.split(';');
		for (x=0;x<fns.length;x++) {
			if (fns[x].length>3) {
				document.addEventListener("DOMContentLoaded", eval(fns[x].replace('()','')), false);
			}
		}
		return;
	}
  //you can create any tagName, even customTag like <document:ready />
  var tempNode = document.createElement('document:ready');
  (function(){
      try {

        //wait until document.readyState === 'complete';
        if(document.readyState != 'complete') return setTimeout(arguments.callee, 0);

        //see if it throws errors until after ondocumentready
        tempNode.doScroll('left');

        //call your function which catch window.onDocumentReady
        eval(functionName);

        //relaese some memory, if possible
        tempNode = null;

      }catch (err){
        setTimeout(arguments.callee, 100);
      }
  })();
};// IE5.5+ PNG Alpha Fix v2.0 Alpha: Background Tiling Support
// (c) 2008 Angus Turnbull http://www.twinhelix.com

// This is licensed under the GNU LGPL, version 2.1 or later.
// For details, see: http://creativecommons.org/licenses/LGPL/2.1/

var IEPNGFix = window.IEPNGFix || {};

IEPNGFix.tileBG = function(elm, pngSrc, ready) {
	// Params: A reference to a DOM element, the PNG src file pathname, and a
	// hidden "ready-to-run" passed when called back after image preloading.

	var data = this.data[elm.uniqueID],
		elmW = Math.max(elm.clientWidth, elm.scrollWidth),
		elmH = Math.max(elm.clientHeight, elm.scrollHeight),
		bgX = elm.currentStyle.backgroundPositionX,
		bgY = elm.currentStyle.backgroundPositionY,
		bgR = elm.currentStyle.backgroundRepeat;

	// Cache of DIVs created per element, and image preloader/data.
	if (!data.tiles) {
		data.tiles = {
			elm: elm,
			src: '',
			cache: [],
			img: new Image(),
			old: {}
		};
	}
	var tiles = data.tiles,
		pngW = tiles.img.width,
		pngH = tiles.img.height;

	if (pngSrc) {
		if (!ready && pngSrc != tiles.src) {
			// New image? Preload it with a callback to detect dimensions.
			tiles.img.onload = function() {
				this.onload = null;
				IEPNGFix.tileBG(elm, pngSrc, 1);
			};
			return tiles.img.src = pngSrc;
		}
	} else {
		// No image?
		if (tiles.src) ready = 1;
		pngW = pngH = 0;
	}
	tiles.src = pngSrc;

	if (!ready && elmW == tiles.old.w && elmH == tiles.old.h &&
		bgX == tiles.old.x && bgY == tiles.old.y && bgR == tiles.old.r) {
		return;
	}

	// Convert English and percentage positions to pixels.
	var pos = {
			top: '0%',
			left: '0%',
			center: '50%',
			bottom: '100%',
			right: '100%'
		},
		x,
		y,
		pc;
	x = pos[bgX] || bgX;
	y = pos[bgY] || bgY;
	if (pc = x.match(/(\d+)%/)) {
		x = Math.round((elmW - pngW) * (parseInt(pc[1]) / 100));
	}
	if (pc = y.match(/(\d+)%/)) {
		y = Math.round((elmH - pngH) * (parseInt(pc[1]) / 100));
	}
	x = parseInt(x);
	y = parseInt(y);

	// Handle backgroundRepeat.
	var repeatX = { 'repeat': 1, 'repeat-x': 1 }[bgR],
		repeatY = { 'repeat': 1, 'repeat-y': 1 }[bgR];
	if (repeatX) {
		x %= pngW;
		if (x > 0) x -= pngW;
	}
	if (repeatY) {
		y %= pngH;
		if (y > 0) y -= pngH;
	}

	// Go!
	this.hook.enabled = 0;
	if (!({ relative: 1, absolute: 1 }[elm.currentStyle.position])) {
		elm.style.position = 'relative';
	}
	var count = 0,
		xPos,
		maxX = repeatX ? elmW : x + 0.1,
		yPos,
		maxY = repeatY ? elmH : y + 0.1,
		d,
		s,
		isNew;
	if (pngW && pngH) {
		for (xPos = x; xPos < maxX; xPos += pngW) {
			for (yPos = y; yPos < maxY; yPos += pngH) {
				isNew = 0;
				if (!tiles.cache[count]) {
					tiles.cache[count] = document.createElement('div');
					isNew = 1;
				}
				var clipR = (xPos + pngW > elmW ? elmW - xPos : pngW),
					clipB = (yPos + pngH > elmH ? elmH - yPos : pngH);
				d = tiles.cache[count];
				s = d.style;
				s.behavior = 'none';
				s.left = xPos + 'px';
				s.top = yPos + 'px';
				s.width = clipR + 'px';
				s.height = clipB + 'px';
				s.clip = 'rect(' +
					(yPos < 0 ? 0 - yPos : 0) + 'px,' +
					clipR + 'px,' +
					clipB + 'px,' +
					(xPos < 0 ? 0 - xPos : 0) + 'px)';
				s.display = 'block';
				if (isNew) {
					s.position = 'absolute';
					s.zIndex = -999;
					if (elm.firstChild) {
						elm.insertBefore(d, elm.firstChild);
					} else {
						elm.appendChild(d);
					}
				}
				this.fix(d, pngSrc, 0);
				count++;
			}
		}
	}
	while (count < tiles.cache.length) {
		this.fix(tiles.cache[count], '', 0);
		tiles.cache[count++].style.display = 'none';
	}

	this.hook.enabled = 1;

	// Cache so updates are infrequent.
	tiles.old = {
		w: elmW,
		h: elmH,
		x: bgX,
		y: bgY,
		r: bgR
	};
};


IEPNGFix.update = function() {
	// Update all PNG backgrounds.
	for (var i in IEPNGFix.data) {
		var t = IEPNGFix.data[i].tiles;
		if (t && t.elm && t.src) {
			IEPNGFix.tileBG(t.elm, t.src);
		}
	}
};
IEPNGFix.update.timer = 0;

if (window.attachEvent && !window.opera) {
	window.attachEvent('onresize', function() {
		clearTimeout(IEPNGFix.update.timer);
		IEPNGFix.update.timer = setTimeout(IEPNGFix.update, 100);
	});
}