function checkCookie(c_name)
{
    c_name=getCookie(c_name);
    
    if(c_name!=null && c_name!="")
    {
        return c_name;
    }
    else
    {
        return "";
    }
}

function getCookie(c_name)
{
    if(document.cookie.length>0)
    {
        c_start=document.cookie.indexOf(c_name + "=");
        if(c_start!=-1)
        {
            c_start=c_start + c_name.length+1;
            c_end=document.cookie.indexOf(";",c_start);
            if(c_end==-1) c_end=document.cookie.length;
            return unescape(document.cookie.substring(c_start,c_end));
        }
    }
    return "";
}

function setCookie(c_name,value,expiredays)
{
    var exdate=new Date();
    exdate.setDate(exdate.getDate()+expiredays);
    document.cookie=c_name+ "=" +escape(value)+
    ((expiredays==null) ? "" : ";expires="+exdate.toUTCString()+"domain=knihovnakralovice.cz;path=/;");
}


function setBodyClass()
{
    c_font=checkCookie("font");
    if(c_font=="")
    {
        setCookie("font","font-def",365);
        
        c_font="font-def";
    }
    
    c_contrast=checkCookie("contrast");
    if(c_contrast=="")
    {
        setCookie("contrast","kontrast-def",365);
        c_contrast="kontrast-def";
    }
    
    // Set class for active
    switch(c_font)
    {
        case "font-xlarge":
            document.getElementById("mf1").className = " ";
            document.getElementById("mf2").className = "akt";
            document.getElementById("mf3").className = " ";
        break;
        
        case "font-xxlarge":
            document.getElementById("mf1").className = " ";
            document.getElementById("mf2").className = " ";
            document.getElementById("mf3").className = "akt";
        break;
        
        default:
            document.getElementById("mf1").className = "akt";
            document.getElementById("mf2").className = " ";
            document.getElementById("mf3").className = " ";
    }
    
    // Set class for active
    switch(c_contrast)
    {
        case "kontrast":
            document.getElementById("mk1").className = " ";
            document.getElementById("mk2").className = "akt";
        break;
        
        default:
            document.getElementById("mk1").className = "akt";
            document.getElementById("mk2").className = " ";
    }
    
    document.body.className = c_font+" "+c_contrast;
}