function centerWindow(new_URL,new_width,new_height,scroll,resize,name) {
var poPupName="";
var xMax = 0, yMax= 0;
xOffset = 0, yOffset = 0;
var urlEncode=new String(new_URL);

if(name!=""){poPupName=name;}
if (document.all)
xMax = screen.width, yMax = screen.height;
else
if (navigator.appName == "Netscape")
xMax = window.outerWidth, yMax = window.outerHeight;
else
xMax = 770, yMax=570;

if (xMax<900){
	new_width = xMax;
	new_height = yMax-20;
} 
xOffset = (xMax - new_width)/2, yOffset = (yMax - new_height)/2;
window.open(urlEncode.replace(/&amp;/,"&"),poPupName,'scrollbars='+scroll+',toolbar=no,titlebar=no,menubar=no,directories=no,dependent=no,resizable='+resize+',width='+new_width+',height='+new_height+',screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+'');
}