function centerWindow(new_URL,new_width,new_height,scroll,resize) {
if (document.all)
var xMax = screen.width, yMax = screen.height;
else
if (document.layers)
var xMax = window.outerWidth, yMax = window.outerHeight;
else
var xMax = 800, yMax=600;
var xOffset = (xMax - new_width)/2, yOffset = (yMax - new_height)/2;
var popup=window.open(new_URL,'pop','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+'');
popup.focus();
}

function centerWindow1(new_URL,new_width,new_height,scroll,resize) {
if (document.all)
var xMax = screen.width, yMax = screen.height;
else
if (document.layers)
var xMax = window.outerWidth, yMax = window.outerHeight;
else
var xMax = 800, yMax=600;
var xOffset = (xMax - new_width)/2, yOffset = (yMax - new_height)/2;
var popup1=window.open(new_URL,'pop1','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+'');
popup1.focus();
}