var oldUrl = false;

function IE5opener(url,w,h){
    w = Math.abs(w)+7; h = Math.abs(h)+27;
    scrollYes = ( w > screen.availWidth || h > screen.availHeight ) ? 1 : 0;
    addScrollbarWidth = (scrollYes) ? 17 : 0;
    w = (w > screen.availWidth) ? screen.availWidth - 40 : w + addScrollbarWidth;
    h = (h > screen.availHeight) ? screen.availHeight - 40 : h + addScrollbarWidth;
var ver =navigator.appVersion;
ver = ver.substring(ver.indexOf("MSIE")+5, ver.length);
ver = parseFloat(ver.substring(0, ver.indexOf(";")));
if(ver >=5){
    if((url != oldUrl)||(WinObj.closed)){
    WinObj = showModelessDialog(url, window, "help: no; status: no; scroll:"+
    scrollYes+"; resizable: on; dialogWidth:"+w+"px; dialogHeight:"+h+"px; margin: 0");
        oldUrl = url;
        }else{
        if(!WinObj.closed){WinObj.focus();}
        }
    }else{
    OtherOpener(url,w,h);
    }
}

function OtherOpener(url,w,h){
    w = w+18; h = h +26;
    d = new Date(); t = d.getTime();
    WinObj = window.open(url, t,"width="+w+",height="+h+",location=yes,status=yes,menubar=yes,toolbar=no,resizable=yes");
    return (WinObj!==null) ? false: true;
    }

function PopUp(url,w,h){
if( document.all ){
    IE5opener(url,w,h);
        }else{
        if(document.images){    OtherOpener(url,w,h);    }
        }
return false;
}