var FC_popWin="";
var FC_popWin2="";

function abrirVentana(URL,largo,alto,status) {
        posx=30;
        posy=30;
        variables = "width="+largo+",height="+alto+",resizable=no,left="+posx+",top="+posy;
        if(status) variables=variables+",status=yes";
        if (alto!=182) variables=variables+",scrollbars=yes";
        if (FC_popWin == "")
                FC_popWin=window.open(URL,"windowll",variables);
        else {
                if (FC_popWin.closed) {
                        FC_popWin=window.open(URL,"windowsll",variables);
                } else {
                        FC_popWin.close();
                        FC_popWin=window.open(URL,"windowsll",variables);
                }
        }
}