(function( $, undefined ) {$.ui = $.ui || {};
var horizontalPositions = /left|center|right/,	verticalPositions = /top|center|bottom/, center = "center", _position = $.fn.position, _offset = $.fn.offset;
$.fn.position = function( options ) {if ( !options || !options.of ) {return _position.apply( this, arguments );}
options = $.extend( {}, options );
var target = $( options.of ), targetElem = target[0], collision = ( options.collision || "flip" ).split( " " ),
offset = options.offset ? options.offset.split( " " ) : [ 0, 0 ], targetWidth, targetHeight, basePosition;
if ( targetElem.nodeType === 9 ) {targetWidth = target.width();	targetHeight = target.height();	basePosition = { top: 0, left: 0 };} else if ( targetElem.setTimeout ) {
targetWidth = target.width(); targetHeight = target.height(); basePosition = { top: target.scrollTop(), left: target.scrollLeft() }; } else if ( targetElem.preventDefault ) {
options.at = "left top"; targetWidth = targetHeight = 0; basePosition = { top: options.of.pageY, left: options.of.pageX };} else {
targetWidth = target.outerWidth();	targetHeight = target.outerHeight(); basePosition = target.offset();}
$.each( [ "my", "at" ], function() {var pos = ( options[this] || "" ).split( " " );	if ( pos.length === 1) {pos = horizontalPositions.test( pos[0] ) ? pos.concat( [center] ) : 
verticalPositions.test( pos[0] ) ?	[ center ].concat( pos ) :	[ center, center ];	}
pos[ 0 ] = horizontalPositions.test( pos[0] ) ? pos[ 0 ] : center; pos[ 1 ] = verticalPositions.test( pos[1] ) ? pos[ 1 ] : center; options[ this ] = pos;	});
if ( collision.length === 1 ) {	collision[ 1 ] = collision[ 0 ];}
offset[ 0 ] = parseInt( offset[0], 10 ) || 0; if ( offset.length === 1 ) { offset[ 1 ] = offset[ 0 ];}
offset[ 1 ] = parseInt( offset[1], 10 ) || 0;
if ( options.at[0] === "right" ) {basePosition.left += targetWidth;} else if (options.at[0] === center ) {basePosition.left += targetWidth / 2;}
if ( options.at[1] === "bottom" ) {basePosition.top += targetHeight; } else if ( options.at[1] === center ) {basePosition.top += targetHeight / 2;}
basePosition.left += offset[ 0 ]; basePosition.top += offset[ 1 ];
return this.each(function() {var elem = $( this ), elemWidth = elem.outerWidth(), elemHeight = elem.outerHeight(), marginLeft = parseInt( $.curCSS( this, "marginLeft", true ) ) || 0, 
marginTop = parseInt( $.curCSS( this, "marginTop", true ) ) || 0, collisionWidth = elemWidth + marginLeft +
parseInt( $.curCSS( this, "marginRight", true ) ) || 0,	collisionHeight = elemHeight + marginTop + parseInt( $.curCSS( this, "marginBottom", true ) ) || 0,	position = $.extend( {}, basePosition ),	collisionPosition;
if ( options.my[0] === "right" ) {position.left -= elemWidth;	} else if ( options.my[0] === center ) {position.left -= elemWidth / 2;}
if ( options.my[1] === "bottom" ) {	position.top -= elemHeight;	} else if ( options.my[1] === center ) {position.top -= elemHeight / 2;}
position.left = parseInt( position.left ); position.top = parseInt( position.top );
collisionPosition = {left: position.left - marginLeft,top: position.top - marginTop};
$.each( [ "left", "top" ], function( i, dir ) { if ( $.ui.position[ collision[i] ] ) { $.ui.position[ collision[i] ][ dir ]( position, { targetWidth: targetWidth, targetHeight: targetHeight, elemWidth: elemWidth,
elemHeight: elemHeight,	collisionPosition: collisionPosition, collisionWidth: collisionWidth,	collisionHeight: collisionHeight, offset: offset,	my: options.my,	at: options.at});}});
if ( $.fn.bgiframe ) {elem.bgiframe();}
elem.offset( $.extend( position, { using: options.using } ) );});};
$.ui.position = {
fit: {left: function( position, data ) {var win = $( window ), over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft(); position.left = over > 0 ? position.left - over : Math.max( position.left - data.collisionPosition.left, position.left );},
top: function( position, data ) {var win = $( window ), over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop(); position.top = over > 0 ? position.top - over : Math.max( position.top - data.collisionPosition.top, position.top );}},
flip: {left: function( position, data ) {if ( data.at[0] === center ) {return;}
var win = $( window ), over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft(),
myOffset = data.my[ 0 ] === "left" ? -data.elemWidth : data.my[ 0 ] === "right" ? data.elemWidth : 0, 
atOffset = data.at[ 0 ] === "left" ? data.targetWidth :	-data.targetWidth, offset = -2 * data.offset[ 0 ];
position.left += data.collisionPosition.left < 0 ? myOffset + atOffset + offset : over > 0 ? myOffset + atOffset + offset : 0;},
top: function( position, data ) {if ( data.at[1] === center ) {return;}
var win = $( window ), over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop(),
myOffset = data.my[ 1 ] === "top" ?	-data.elemHeight : data.my[ 1 ] === "bottom" ? data.elemHeight : 0,
atOffset = data.at[ 1 ] === "top" ?	data.targetHeight :	-data.targetHeight,	offset = -2 * data.offset[ 1 ];
position.top += data.collisionPosition.top < 0 ? myOffset + atOffset + offset :	over > 0 ? myOffset + atOffset + offset : 0;}}};
if ( !$.offset.setOffset ) { $.offset.setOffset = function( elem, options ) {if ( /static/.test( $.curCSS( elem, "position" ) ) ) { elem.style.position = "relative";}
var curElem   = $( elem ), curOffset = curElem.offset(), 
curTop = parseInt( $.curCSS( elem, "top",  true ), 10 ) || 0, curLeft   = parseInt( $.curCSS( elem, "left", true ), 10)  || 0,
props = { top:  (options.top  - curOffset.top)  + curTop, left: (options.left - curOffset.left) + curLeft};
if ( 'using' in options ) {options.using.call( elem, props );} else {curElem.css( props );}};
$.fn.offset = function( options ) {var elem = this[ 0 ]; if ( !elem || !elem.ownerDocument ) { return null; }
if ( options ) { return this.each(function() {$.offset.setOffset( this, options );});} return _offset.call( this );};}
}( jQuery ));