// Detect if the browser is IE or not.
// If it is not IE, we assume that the browser is NS.
var IE = document.all?true:false

// If NS -- that is, !IE -- then set up for mouse capture
if (!IE) document.captureEvents(Event.MOUSEMOVE)

// Set-up to use getMouseXY function onMouseMove
addOnMouseMoveFunction(getMouseXY);

// Temporary variables to hold mouse x-y pos.s
var tempX = 0;
var tempY = 0;

// Temporary variables to hold screen resolution
var maxX = 800;
var maxY = 600;

// Main function to retrieve mouse x-y pos.s

function getMouseXY(e) {
  if (IE) { // grab the x-y pos.s if browser is IE
    tempX = event.screenX
    tempY = event.screenY 
    
	maxX = screen.availWidth;
    maxY = screen.availHeight;
  } else {  // grab the x-y pos.s if browser is NS
    tempX = e.pageX
    tempY = e.pageY
    
	maxX = screen.width;
    maxY = screen.height + 19;
  }      
  // catch possible negative values in NS4
  if (tempX < 0){tempX = 0}
  if (tempY < 0){tempY = 0}  
  // show the position values in the form named Show
  // in the text fields named MouseX and MouseY    
  
  return true
}

function addOnMouseMoveFunction(func) {
	
	if(!document.onmousemove)
		document.onmousemove = func;
	else {
		var prevFunc = document.onmousemove;
		document.onmousemove = function(){ prevFunc(); func(); };
	}
}


function calendarPopup( FormName, InputName, Value, homeURL, ApplyShippingRules, showDropDowns, numYearsInPast, numYearsInFuture, earliestShippingDate, numMonthsSelectable )
{	
	var calWidth = 240;
	var calHeight = 210;

	tempX += 10;
	tempY -= 10;
	
	if( tempX+calWidth > maxX )
		tempX -= calWidth;
		
	if( tempY + calHeight > maxY )
		tempY -= calHeight;
	
	var calendarWin = window.open(homeURL + "/common/PopupCalendar.aspx?FormName="+FormName+"&FieldName="+InputName+"&CurrentValue="+Value + "&ShowDropDowns=" + showDropDowns + "&NumYearsInPast=" + numYearsInPast + "&NumYearsInFuture=" + numYearsInFuture + "&NumMonthsSelectable=" + numMonthsSelectable + "&EarliestShippingDate=" + earliestShippingDate +  "&ApplyShippingRules="+ (ApplyShippingRules?"true":"false") +"&X=" + tempX + "&Y=" + tempY, "CalendarWindow","width=" + calWidth + ",height=" + calHeight + ",scrolling=no,resizable,screenX=" + tempX + ",screenY=" + tempY + ",top=" + tempY + ",left=" + tempX);
}