function setActiveSS(title) {
	var i, a, main;
	for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if (a.getAttribute("rel") &&
			a.getAttribute("rel").indexOf("style") != -1 &&
		a.getAttribute("title")) {
			a.disabled = true;
			if(a.getAttribute("title") == title) a.disabled = false;
		}
	}
}
function swap(id) {
	if (document.getElementById(id).style.display == "none") {
		document.getElementById(id).style.display = "block";
	} else {
		document.getElementById(id).style.display = "none";
	}
	parentdiv = document.getElementById('rightbar').firstChild;
	while (parentdiv) {
		//alert(parentdiv.id);
		if (parentdiv.className == "hideable" && parentdiv.id != id) {
			parentdiv.style.display = 'none';
		}
		parentdiv = parentdiv.nextSibling;
	}
}
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function getActiveSS() {
	var i, a;
	for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if (a.getAttribute("rel") &&
			a.getAttribute("rel").indexOf("style") != -1 &&
		a.getAttribute("title") &&
		!a.disabled
		) return a.getAttribute("title");
	}
	return null;
}

function getPreferredSS() {
	var i, a;
	for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if (a.getAttribute("rel") &&
			a.getAttribute("rel").indexOf("style") != -1 &&
			a.getAttribute("rel").indexOf("alt") == -1 &&
			a.getAttribute("title")
		) return a.getAttribute("title");
	}
	return null;
}

function size_onload() {
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredSS();
	setActiveSS(title);
}

window.onunload = function(e) {
	var title = getActiveSS();
	createCookie("style", title, 365);
}


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_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_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 calculate_total() { // prereg form

	if(window.location.href.indexOf('firefly') != -1 ) {
		return false;
	}
	theform = document.getElementById('preregister');
	sits_nums = ['sits_f_students', 'sits_f_sponsors', 'sits_m_students', 'sits_m_sponsors'];
	jhc_nums = ['jhc_f_students', 'jhc_f_sponsors', 'jhc_m_students', 'jhc_m_sponsors'];

	sits = 0;
	for(i=0;i<sits_nums.length;i++) {
		current = document.getElementById('ff_' + sits_nums[i]).value;
		if(!isNaN(parseInt(current))) {
			sits = sits + parseInt(current);
		}
	}

	jhc = 0;
	for(i=0;i<jhc_nums.length;i++) {
		current = document.getElementById('ff_' + jhc_nums[i]).value;
		if(!isNaN(parseInt(current))) {
			jhc = jhc + parseInt(current);
		}
	}

	var sits_sub = sits * 75;
	var sits_due = sits * 150;

	var jhc_sub = jhc * 75;
	var jhc_due = jhc * 135;

	var a = sits + jhc;

	var s = a * 75; // subtotal

	var cc = s * .03; // just cc

	var t = s + cc; // grand total

	var total_due = jhc_due + sits_due;

	document.getElementById('sits_sub').innerHTML = '$' + sits_sub.toFixed(2) + ' deposit <br /> $' + sits_due.toFixed(2) +' at registration';
	theform.sits_sub.value = '$' + sits_due.toFixed(2);

	document.getElementById('jhc_sub').innerHTML = '$' + jhc_sub.toFixed(2) + ' deposit <br /> $' + jhc_due.toFixed(2) +' at registration';
	theform.jhc_sub.value = '$' + jhc_due.toFixed(2);

	document.getElementById('total_subtotal').innerHTML = '$' + s.toFixed(2) + ' (' + a + ' attendees)';
	theform.total_subtotal.value = '$' + s.toFixed(2);

	document.getElementById('total_processing').innerHTML = '$' + cc.toFixed(2);
	theform.total_processing.value = '$' + cc.toFixed(2);

	document.getElementById('total_deposit').innerHTML = '$' + t.toFixed(2);
	theform.total_deposit.value = '$' + t.toFixed(2);

	document.getElementById('total_due').innerHTML = '$' + total_due.toFixed(2);
	theform.total_due.value = '$' + total_due.toFixed(2);

	return false;
}