var version4 = (navigator.appVersion.charAt(0) == "4"); 
var popupHandle;
function closePopup() {	if(popupHandle != null && !popupHandle.closed) popupHandle.close() }
function displayPopup(position,url,name,width,height,evnt) {
var properties = "scrollbars=yes,toolbar=0,location=0,height="+height
properties = properties+",width="+width
var leftprop, topprop, screenX, screenY, cursorX, cursorY, padAmt
if(navigator.appName == "Microsoft Internet Explorer") {
screenY = document.body.offsetHeight
screenX = window.screen.availWidth
} else {
screenY = screen.height;
screenX = screen.width;
}
if(position == 1) {
cursorX = evnt.screenX  
cursorY = evnt.screenY 
padAmtX = -100
padAmtY = +100
if((cursorY + height + padAmtY) > screenY) {
padAmtY = (+100) + (height*+1);	
}
if((cursorX + width + padAmtX) > screenX) {
padAmtX = (-100) + (width*+1);	
}
if(navigator.appName == "Microsoft Internet Explorer") {
leftprop = cursorX + padAmtX
topprop = cursorY + padAmtY
} else {
leftprop = (cursorX - pageXOffset + padAmtX)
topprop = (cursorY - pageYOffset + padAmtY)
}
} else {
leftvar = (screenX - width) / 2
rightvar = (screenY - height) / 2
if(navigator.appName == "Microsoft Internet Explorer") {
leftprop = leftvar
topprop = rightvar
} else {
leftprop = (leftvar - pageXOffset)
topprop = (rightvar - pageYOffset)
}
}
if(evnt != null) {
properties = properties+",left="+leftprop
properties = properties+",top="+topprop
}
closePopup()
popupHandle = open(url,name,properties)
}