function popUp(url,width,height,scroll,resize)
{
	var left = screen.width/2 - width/2;
	var top = screen.height/2 - height/2;
	var popWin = window.open(url, "pop", "left=" + left + ",top=" + top + ",width=" + width + ",height=" + height + ",scrollbars=" + scroll + ",resizable=" + resize);
}

function ShowHide(a_show,a_hide)
{
    if (document.layers)
    {
        document.layers(a_show).style.display = "block";
        document.layers(a_hide).style.display = "none";
    }
    else
    {
        document.getElementById(a_show).style.display = "block";
        document.getElementById(a_hide).style.display = "none";
    }
}

function Show(a_show)
{
    if (document.layers)
    {
        if(document.layers(a_show).style.display != "block")
        {//show it
            document.layers(a_show).style.display = "block";
        }
        else
        {//hide it
            document.layers(a_show).style.display = "none";
        }
    }
    else
    {
        if (document.getElementById(a_show).style.display != "block")
        {//show it
            document.getElementById(a_show).style.display = "block";
        }
        else
        {//hide it
            document.getElementById(a_show).style.display = "none";
        }
    }
}