function fix_external_links()
{
    // assign external link popup warnings
    $("#content a[href^='http']").click( function() {
				if ($(this).attr('rel') == 'coupon')
				{
					load_facebox_page('leaving-coupons', $(this).attr('href'), $(this).attr('rel'));
					return false;
				}
				else if ($(this).attr('rel') != 'safe')
				{
					load_facebox_page('leaving', $(this).attr('href'), $(this).attr('rel'));
					return false;
				}
				else
					return true;
    });
}

function assign_sub_nav_button_hovers()
{
    // assign the hovers to non-active buttons
    $("#bottom-nav img[class!=active]").hover(function() {
				if ($(this).attr("class") != 'exclude')
        	$(this).attr("src", $(this).attr("src").split(".").join("_on."));
    }, function() {
        $(this).attr("src", $(this).attr("src").split("_on.").join("."));
    });
    
    // assign the active buttons
    $("#bottom-nav img[class=active]").each(function() {
        $(this).attr("src", $(this).attr("src").split(".").join("_on."));
    });
}

function assign_other_hovers()
{
    // assign the hovers to non-active buttons
    $("#content img[class=hover], #header img[class=hover]").hover(function() {
        $(this).attr("src", $(this).attr("src").split(".").join("_on."));
    }, function() {
        $(this).attr("src", $(this).attr("src").split("_on.").join("."));
    });
}

function fix_hr_in_ie()
{
	$('hr').wrap('<div class="hr_fix"></div>');
}

function urlencode( str ) {                 
    var histogram = {}, tmp_arr = [];
    var ret = str.toString();
    
    var replacer = function(search, replace, str) {
        var tmp_arr = [];
        tmp_arr = str.split(search);
        return tmp_arr.join(replace);
    };
    
    // The histogram is identical to the one in urldecode.
    histogram["'"]   = '%27';
    histogram['(']   = '%28';
    histogram[')']   = '%29';
    histogram['*']   = '%2A';
    histogram['~']   = '%7E';
    histogram['!']   = '%21';
    histogram['%20'] = '+';
    
    // Begin with encodeURIComponent, which most resembles PHP's encoding functions
    ret = encodeURIComponent(ret);
    
    for (var search in histogram) {
        replace = histogram[search];
        ret = replacer(search, replace, ret); // Custom replace. No regexing
    }    
    
    // Uppercase for full PHP compatibility
    return ret.replace(/(\%([a-z0-9]{2}))/g, function(full, m1, m2) {
        return "%"+m2.toUpperCase();
    });
    
    return ret;
}

function load_facebox_page(page, arg, rel)
{
	var html = $.ajax({
			url: "/popup/"+page+".jsp?arg="+urlencode(arg),
			async: false
	 }).responseText;
	 $.facebox(html, rel);
}

function alter_stylesheet(size)
{
	setActiveStyleSheet(size);
	$('#sizer_image').attr('src', '/resources/images/font_'+size+'.gif');
}

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; createCookie("style", title, 365)}
    }
  }
}

function getPreferredStyleSheet()
{
	return null;
}

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 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 read_style()
{
	var cookie = readCookie("style");
	var title = cookie ? cookie : 'medium';
	
	alter_stylesheet(title);
}

$(document).ready(function(){
		fix_external_links();
    assign_sub_nav_button_hovers();
		assign_other_hovers();
		fix_hr_in_ie();
		read_style();
});