/////////////////////////////////////////////////
// this function pops up a modal window
/////////////////////////////////////////////////
var d = new Date();
var ID = d.getDate()+""+d.getMonth() + 1+""+d.getFullYear()+""+d.getHours()+""+d.getMinutes()+""+d.getSeconds();

function popup(pageName,height,width)
{       
    var left = (screen.availWidth - width)/2;
    var top = (screen.availHeight - height)/2;
    var lastParm = "dialogWidth="+width+"px;dialogHeight="+height+"px;scroll=no;status=no;";
    if (window.showModalDialog)
    {
        var dialogArguments = new Object();
        var _R = window.showModalDialog(pageName, 
                                        dialogArguments, 
                                        lastParm);
    }       
    else    //NS            
    {   
        var left = (screen.width-width)/2;
        var top = (screen.height-height)/2;
        winHandle = window.open(pageName, ID, "modal,toolbar=false,location=false,directories=false,status=false,menubar=false,scrollbars=no,resizable=no,left="+left+",top="+top+",width="+width+",height="+height);
        winHandle.focus();
    }
    return false;
}