/**
* Accessibility
*/

var fs_default   = 'normal';
var prefs_loaded = false;
var fs_current   = fs_default;


window.onload = prefs_load;
window.onunload = prefs_save;

function cookie_get(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 cookie_set(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}


function prefs_load(){
    if(!prefs_loaded){

        var c = cookie_get('eydos_fs');
        fs_current = c ? c : fs_default;
        fs_set(fs_current);
		
		prefs_loaded = true;
    }
}

function prefs_save(){
    cookie_set('eydos_fs', fs_current, 365);
}

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