function popUp(theURL,winName,features,myWidth,myHeight,isCenter) {
  if(window.screen)if(isCenter)if(isCenter=="true"){
    var myLeft = ((screen.width-myWidth)/2);
    var myTop = ((screen.height-myHeight)/2);
    features+=(features!='')?',':'';
    features+=',left='+myLeft+',top='+myTop;
  }
  window.open(theURL,winName,features+((features!='')?',':'')+'width='+myWidth+',height='+myHeight);
}

function windowSized(url,name,features) { 
	win = window.open(url,name,features);
}