// Style Sheet Accessibility Functions

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("styleside");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

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

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

//Navigation Functions

function loadNav() {
	
	for (i=0; i<3; i++) {
		document.getElementById('l'+i).onmouseover = showNav;
		document.getElementById('l'+i).onmouseout = hideNav;
		
		document.getElementById('s'+i).onmouseover = showNav;
		document.getElementById('s'+i).onmouseout = hideNav;
	}

	hideNav();
	
	if (document.body.parentNode.clientWidth < 880) {
		document.getElementById('two').style.width = '29%';
		document.getElementById('two').style.marginLeft = '2%';
	}
	
	return;
}

function showNav() {
	hideNav();
	
	if (this.id.substr(0,1) == 'l') {
		document.getElementById(this.id).style.backgroundColor = '#690';
//		document.getElementById(this.id).style.backgroundImage = 'url(/images/navback.gif)';
		document.getElementById('s'+this.id.substr(1)).style.display = 'block';
	}
	else {
		document.getElementById('l'+this.id.substr(1)).style.backgroundColor = '#690';
//		document.getElementById('l'+this.id.substr(1)).style.backgroundImage = 'none';
		document.getElementById(this.id).style.display = 'block';	
	}
	return;
}

function hideNav() {
	for (i=0; i<3; i++) {
		document.getElementById('l'+i).style.backgroundColor = '#000';
		document.getElementById('s'+i).style.display = 'none';
	}
	return;
}

////////////////////////////

function getElementsByClassName(oElm, strTagName, strClassName){
    var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for(var i=0; i<arrElements.length; i++){
        oElement = arrElements[i];      
        if(oRegExp.test(oElement.className)){
            arrReturnElements.push(oElement);
        }   
    }
    return (arrReturnElements)
}