var popupWin = null;

function OpenElearn(url) {
    window.open(url,"","width=800, height=600,status=yes");
}

function hello(text)
{
  alert(text);
}

function iswindow() 
{
    if (popupWin != null) 
    {
        if (!popupWin.closed) 
        {
            return true;
        }
        else 
        {
            return false;
        }
    }
    else 
    {
        return false;
    }
}

function openwindow(site, bredde, hoejde) 
{
	var topLeftX = ( (window.screen.width - bredde) / 2 );
	var topLeftY = ( (window.screen.height - hoejde) / 2 );
	var popupWin = window.open(site, popupWin, "toolbar=0,top=" + topLeftY + ",left=" + topLeftX + ",width=" + bredde + ",height=" + hoejde + ",directories=0,status=1,scrollbars=1,resize=no,menubar=0");

	if (popupWin != null) 
	{
	    popupWin.focus();
	}
}