function Get_Cookie(name) {
    var start = document.cookie.indexOf(name+"=");
    var len = start+name.length+1;
    if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
    if (start == -1) return null;
    var end = document.cookie.indexOf(";",len);
    if (end == -1) end = document.cookie.length;
    return unescape(document.cookie.substring(len,end));
}

function Set_Cookie(name,value,expires,path,domain,secure) {
    document.cookie = name + "=" +escape(value) +
        ( (expires) ? ";expires=" + expires.toGMTString() : "") +
        ( (path) ? ";path=" + path : "") + 
        ( (domain) ? ";domain=" + domain : "") +
        ( (secure) ? ";secure" : "");
}

var expires = new Date();
expires.setTime(expires.getTime() + (365 * 24 * 60 * 60 * 1000 * 365));

mySheet = Get_Cookie('stylesheet');

if (mySheet != null)
    document.write('<LINK REL="stylesheet" HREF="/css/' + mySheet + '.css">');
else
    document.write('<LINK REL="stylesheet" HREF="/css/style.css">');

function checkStyle() {
    if (mySheet != null) {
        if (document.styleSheets)
            document.styleSheets[0].href = '/style/' + mySheet + '.css';
        else if (document.layers) {
            document.layers['style'].visibility = 'hide';
            document.layers['style_medium'].visibility = 'hide';
            document.layers['style_large'].visibility = 'hide';
            document.layers[mySheet].visibility = 'show';
        }
    }
}

function changeSheet(choice) {

    var st;
    
    if (choice == 0) mySheet = 'style';
    if (choice == 1) mySheet = 'style_medium';
    if (choice == 2) mySheet = 'style_large';

    //alert("inside changesheet mySheet: " + mySheet);

    if (document.styleSheets)
        document.styleSheets[0].href = '/style/' + mySheet + '.css';
    else if (document.layers) {
        document.layers['style'].visibility = 'hide';
        document.layers['style_medium'].visibility = 'hide';
        document.layers['style_large'].visibility = 'hide';
        document.layers[mySheet].visibility = 'show';
    }
}