var win = null;
function newWindow(mypage,myname,w,h,scroll) {
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable';
	win = window.open(mypage,myname,settings);
}

// Script by http://www.java-Scripts.net and http://wsabstract.com
function doClear(theText) {
	if (theText.value == theText.defaultValue) {
		theText.value = "";
	}
}

function submitIt(payment_form) {
	payment_choice = -1;
	for ( i = 0; i < payment_form.payment_method.length; i++) {
		if (payment_form.payment_method[i].checked) {
			payment_choice = i;
		}
	}
	if (payment_choice == -1) {
		alert("You must select a payment method.");
		return false;
	}
	return true;
}

function payMethodSet(form_name, radio_value) {
	var f = document.getElementById(form_name);
	for (i = 0; i < f.payment_method.length; i++) {
		if (f.payment_method[i].value == radio_value) {
			f.payment_method[i].checked = true;
		}
	}
}

function toggleDiv(value) {
	var div_id_value = 'toggle_'+value;
	var image_id = 'image_'+value;
	if (document.getElementById(div_id_value).style.display == 'none') {
		document.getElementById(div_id_value).style.display = 'block';
		document.getElementById(image_id).src = '/wp-content/themes/facultyfocus/images/triangle_down.gif';
	} else {
		document.getElementById(div_id_value).style.display = 'none';
		document.getElementById(image_id).src = '/wp-content/themes/facultyfocus/images/triangle_right.gif';
	}
}

function toggle(targetId, sourceId) {
	var target = document.getElementById(targetId);
	if (sourceId.checked) {
		target.style.display = "block";
	} else {
		target.style.display = "none";
	}
}

function buttonToggle() {
	for (i=0; i<document.order_form.payment_method.length; i++) {
		if (document.order_form.payment_method[i].checked) {
			document.getElementById('payment_method_'+i).style.display = 'block';
		} else {
			document.getElementById('payment_method_'+i).style.display = 'none';
		}
	}
}

function printIt() {
	window.print();
}

/* style sheet switcher -- Snowden/A List Apart */

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

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

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

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;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

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

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);