function hbcPop(key, country, state, city) {
    if ( checkPop() )
    {
        if (key==""){key=document.getElementById("rs_city").value;}
        if (city==""){city=document.getElementById("rs_city").value;}
        var page = "http://www.hotelsbycity.com/hotels/pop_up.php?key="+key+"&country="+country+"&state="+state+"&city="+city;
        var windowprops = "resizable=1,scrollbars=1,menubar=1,location=1,toolbar=1,titlebar=1,width=680,height=510, top=50, left=50";
        newWindow = window.open(page, 'HBCPop', windowprops);
        newWindow.blur();
    }
}

function checkPop()
{
    var oldTime = readCookie("lastHBCPop");
    var rightNow = new Date();
    
    if ( oldTime == null )
    {
        createCookie( "lastHBCPop", rightNow.getTime(), 0 );
        return ( true );
    }
    else
    {
        if ( (parseInt(oldTime) + (4 * 60 * 60 * 60 )) > (parseInt(rightNow.getTime())) )
        {
            return ( false );
        }
        else
        {
            createCookie( "lastHBCPop", rightNow.getTime(), 0 );
            return ( true );
        }
    }
}

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 var 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 eraseCookie(name)
{
    createCookie(name,"",-1);
}