// JScript File

function isdefined( variable)
{
    return (typeof(window[variable]) == "undefined")?  false: true;
}

// Adds a load event to the client
function addLoadEvent(func) 
{
    var oldonload = window.onload;
    
    if (typeof window.onload != 'function') 
    {
        window.onload = func;
    } 
    else 
    {
        window.onload = function() 
                        {
                            if (oldonload) 
                            {
                                oldonload();
                            }
                            
                            func();
                        }
    }
    
}