function newWindow(url,winName,features, thisWidth, thisHeight, isCenter) { //v3.0
 	if(window.screen)if(isCenter)if(isCenter=="true"){
    	var thisLeft = (screen.width-thisWidth)/2;
    	var thisTop = (screen.height-thisHeight)/2;
    	features+=(features!='')?',':'';
    	features+=',left='+thisLeft+',top='+thisTop;
  	}
  	window.open(url,winName,features+((features!='')?',':'')+'width='+thisWidth+',height='+thisHeight);
}