function popup(url, name, options)
{
    if (options == null)
    {
        options = "width=675,height=640,top=50,left=50,resizable=yes,scrollbars=yes"
    }
    
    var wNew = window.open(url, name, options);
    wNew.focus();
}

function specialKeyPress()
{
    var isValid = true;
    var keyCode = window.event.keyCode;
        
    switch (keyCode)
    {
        case 91:           // [
        case 93:           // ]
        case 37:           // %
        case 44:           // ,
            isValid = false;
            break;
    }    
        
    window.event.returnValue = isValid;
}

var valueChanged = false;

function valueChange()
{
	valueChanged = true;
}

function hover(img, src)
{
	if (loaded)
	{
		img.src = src;
	}
}

var loaded = false;

if (document.images)
{	
	loaded = true;
}