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+/*
+ * jQuery UI Position 1.9pre
+ *
+ * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Position
+ */
+(function( $, undefined ) {
+
+$.ui = $.ui || {};
+
+var rhorizontal = /left|center|right/,
+	rvertical = /top|center|bottom/,
+	roffset = /[+-]\d+%?/,
+	rposition = /^\w+/,
+	rpercent = /%$/,
+	center = "center",
+	_position = $.fn.position;
+
+$.position = {
+	scrollbarWidth: function() {
+		var w1, w2,
+			div = $( "<div style='display:block;width:50px;height:50px;overflow:hidden;'><div style='height:100px;width:auto;'></div></div>" ),
+			innerDiv = div.children()[0];
+
+		$( "body" ).append( div );
+		w1 = innerDiv.offsetWidth;
+		div.css( "overflow", "scroll" );
+
+		w2 = innerDiv.offsetWidth;
+
+		if ( w1 === w2 ) {
+			w2 = div[0].clientWidth;
+		}
+
+		div.remove();
+
+		return w1 - w2; 
+	},
+	getScrollInfo: function(within) {
+		var notWindow = within[0] !== window,
+			overflowX = notWindow ? within.css( "overflow-x" ) : "",
+			overflowY = notWindow ? within.css( "overflow-y" ) : "",
+			scrollbarWidth = overflowX === "auto" || overflowX === "scroll" ? $.position.scrollbarWidth() : 0,
+			scrollbarHeight = overflowY === "auto" || overflowY === "scroll" ? $.position.scrollbarWidth() : 0;
+
+		return {
+			height: within.height() < within[0].scrollHeight ? scrollbarHeight : 0,
+			width: within.width() < within[0].scrollWidth ? scrollbarWidth : 0
+		};
+	}
+};
+
+$.fn.position = function( options ) {
+	if ( !options || !options.of ) {
+		return _position.apply( this, arguments );
+	}
+
+	// make a copy, we don't want to modify arguments
+	options = $.extend( {}, options );
+
+	var target = $( options.of ),
+		within  = $( options.within || window ),
+		targetElem = target[0],
+		collision = ( options.collision || "flip" ).split( " " ),
+		offsets = {},
+		atOffset,
+		targetWidth,
+		targetHeight,
+		basePosition;
+
+	if ( targetElem.nodeType === 9 ) {
+		targetWidth = target.width();
+		targetHeight = target.height();
+		basePosition = { top: 0, left: 0 };
+	} else if ( $.isWindow( targetElem ) ) {
+		targetWidth = target.width();
+		targetHeight = target.height();
+		basePosition = { top: target.scrollTop(), left: target.scrollLeft() };
+	} else if ( targetElem.preventDefault ) {
+		// force left top to allow flipping
+		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();
+	}
+
+	// force my and at to have valid horizontal and vertical positions
+	// if a value is missing or invalid, it will be converted to center
+	$.each( [ "my", "at" ], function() {
+		var pos = ( options[ this ] || "" ).split( " " ),
+			horizontalOffset,
+			verticalOffset;
+
+		if ( pos.length === 1) {
+			pos = rhorizontal.test( pos[ 0 ] ) ?
+				pos.concat( [ center ] ) :
+				rvertical.test( pos[ 0 ] ) ?
+					[ center ].concat( pos ) :
+					[ center, center ];
+		}
+		pos[ 0 ] = rhorizontal.test( pos[ 0 ] ) ? pos[ 0 ] : center;
+		pos[ 1 ] = rvertical.test( pos[ 1 ] ) ? pos[ 1 ] : center;
+
+		// calculate offsets
+		horizontalOffset = roffset.exec( pos[ 0 ] );
+		verticalOffset = roffset.exec( pos[ 1 ] );
+		offsets[ this ] = [
+			horizontalOffset ? horizontalOffset[ 0 ] : 0,
+			verticalOffset ? verticalOffset[ 0 ] : 0
+		];
+
+		// reduce to just the positions without the offsets
+		options[ this ] = [
+			rposition.exec( pos[ 0 ] )[ 0 ],
+			rposition.exec( pos[ 1 ] )[ 0 ]
+		];
+	});
+
+	// normalize collision option
+	if ( collision.length === 1 ) {
+		collision[ 1 ] = collision[ 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;
+	}
+
+	atOffset = [
+		parseInt( offsets.at[ 0 ], 10 ) *
+			( rpercent.test( offsets.at[ 0 ] ) ? targetWidth / 100 : 1 ),
+		parseInt( offsets.at[ 1 ], 10 ) *
+			( rpercent.test( offsets.at[ 1 ] ) ? targetHeight / 100 : 1 )
+	];
+	basePosition.left += atOffset[ 0 ];
+	basePosition.top += atOffset[ 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,
+			scrollInfo = $.position.getScrollInfo( within ),
+			collisionWidth = elemWidth + marginLeft +
+				( parseInt( $.curCSS( this, "marginRight", true ) ) || 0 ) + scrollInfo.width,
+			collisionHeight = elemHeight + marginTop +
+				( parseInt( $.curCSS( this, "marginBottom", true ) ) || 0 ) + scrollInfo.height,
+			position = $.extend( {}, basePosition ),
+			myOffset = [
+				parseInt( offsets.my[ 0 ], 10 ) *
+					( rpercent.test( offsets.my[ 0 ] ) ? elem.outerWidth() / 100 : 1 ),
+				parseInt( offsets.my[ 1 ], 10 ) *
+					( rpercent.test( offsets.my[ 1 ] ) ? elem.outerHeight() / 100 : 1 )
+			],
+			collisionPosition;
+
+		if ( options.my[ 0 ] === "right" ) {
+			position.left -= elemWidth;
+		} else if ( options.my[ 0 ] === center ) {
+			position.left -= elemWidth / 2;
+		}
+
+		if ( options.my[ 1 ] === "bottom" ) {
+			position.top -= elemHeight;
+		} else if ( options.my[ 1 ] === center ) {
+			position.top -= elemHeight / 2;
+		}
+
+		position.left += myOffset[ 0 ];
+		position.top += myOffset[ 1 ];
+
+		// if the browser doesn't support fractions, then round for consistent results
+		if ( !$.support.offsetFractions ) {
+			position.left = Math.round( position.left );
+			position.top = Math.round( position.top );
+		}
+
+		collisionPosition = {
+			marginLeft: marginLeft,
+			marginTop: 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: [ atOffset[ 0 ] + myOffset[ 0 ], atOffset [ 1 ] + myOffset[ 1 ] ],
+					my: options.my,
+					at: options.at,
+					within: within,
+					elem : elem
+				});
+			}
+		});
+
+		if ( $.fn.bgiframe ) {
+			elem.bgiframe();
+		}
+		elem.offset( $.extend( position, { using: options.using } ) );
+	});
+};
+
+$.ui.position = {
+	fit: {
+		left: function( position, data ) {
+			var within = data.within,
+				win = $( window ),
+				isWindow = $.isWindow( data.within[0] ),
+				withinOffset = isWindow ? win.scrollLeft() : within.offset().left,
+				outerWidth = isWindow ? win.width() : within.outerWidth(),
+				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
+				overLeft = withinOffset - collisionPosLeft,
+				overRight = collisionPosLeft + data.collisionWidth - outerWidth - withinOffset,
+				newOverRight,
+				newOverLeft;
+
+			// element is wider than within
+			if ( data.collisionWidth > outerWidth ) {
+				// element is initially over the left side of within
+				if ( overLeft > 0 && overRight <= 0 ) {
+					newOverRight = position.left + overLeft + data.collisionWidth - outerWidth - withinOffset;
+					position.left += overLeft - newOverRight;
+				// element is initially over right side of within
+				} else if ( overRight > 0 && overLeft <= 0 ) {
+					position.left = withinOffset;
+				// element is initially over both left and right sides of within
+				} else {
+					if ( overLeft > overRight ) {
+						position.left = withinOffset + outerWidth - data.collisionWidth;
+					} else {
+						position.left = withinOffset;
+					}
+				}
+			// too far left -> align with left edge
+			} else if ( overLeft > 0 ) {
+				position.left += overLeft;
+			// too far right -> align with right edge
+			} else if ( overRight > 0 ) {
+				position.left -= overRight;
+			// adjust based on position and margin
+			} else {
+				position.left = Math.max( position.left - collisionPosLeft, position.left );
+			}
+		},
+		top: function( position, data ) {
+			var within = data.within,
+				win = $( window ),
+				isWindow = $.isWindow( data.within[0] ),
+				withinOffset = isWindow ? win.scrollTop() : within.offset().top,
+				outerHeight = isWindow ? win.height() : within.outerHeight(),
+				collisionPosTop = position.top - data.collisionPosition.marginTop,
+				overTop = withinOffset - collisionPosTop,
+				overBottom = collisionPosTop + data.collisionHeight - outerHeight - withinOffset,
+				newOverTop,
+				newOverBottom;
+
+			// element is taller than within
+			if ( data.collisionHeight > outerHeight ) {
+				// element is initially over the top of within
+				if ( overTop > 0 && overBottom <= 0 ) {
+					newOverBottom = position.top + overTop + data.collisionHeight - outerHeight - withinOffset;
+					position.top += overTop - newOverBottom;
+				// element is initially over bottom of within
+				} else if ( overBottom > 0 && overTop <= 0 ) {
+					position.top = withinOffset;
+				// element is initially over both top and bottom of within
+				} else {
+					if ( overTop > overBottom ) {
+						position.top = withinOffset + outerHeight - data.collisionHeight;
+					} else {
+						position.top = withinOffset;
+					}
+				}
+			// too far up -> align with top
+			} else if ( overTop > 0 ) {
+				position.top += overTop;
+			// too far down -> align with bottom edge
+			} else if ( overBottom > 0 ) {
+				position.top -= overBottom;
+			// adjust based on position and margin
+			} else {
+				position.top = Math.max( position.top - collisionPosTop, position.top );
+			}
+		}
+	},
+	flip: {
+		left: function( position, data ) {
+			if ( data.at[ 0 ] === center ) {
+				return;
+			}
+
+			data.elem
+				.removeClass( "ui-flipped-left ui-flipped-right" );
+
+			var within = data.within,
+				win = $( window ),
+				isWindow = $.isWindow( data.within[0] ),
+				withinOffset = ( isWindow ? 0 : within.offset().left ) + within.scrollLeft(),
+				outerWidth = isWindow ? within.width() : within.outerWidth(),
+				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
+				overLeft = collisionPosLeft - withinOffset,
+				overRight = collisionPosLeft + data.collisionWidth - outerWidth - withinOffset,
+				left = data.my[ 0 ] === "left",
+				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 ],
+				newOverRight,
+				newOverLeft;
+
+			if ( overLeft < 0 ) {
+				newOverRight = position.left + myOffset + atOffset + offset + data.collisionWidth - outerWidth - withinOffset;
+				if ( newOverRight < 0 || newOverRight < Math.abs( overLeft ) ) {
+					data.elem
+						.addClass( "ui-flipped-right" );
+
+					position.left += myOffset + atOffset + offset;
+				}
+			}
+			else if ( overRight > 0 ) {
+				newOverLeft = position.left - data.collisionPosition.marginLeft + myOffset + atOffset + offset - withinOffset;
+				if ( newOverLeft > 0 || Math.abs( newOverLeft ) < overRight ) {
+					data.elem
+						.addClass( "ui-flipped-left" );
+
+					position.left += myOffset + atOffset + offset;
+				}
+			}
+		},
+		top: function( position, data ) {
+			if ( data.at[ 1 ] === center ) {
+				return;
+			}
+
+			data.elem
+				.removeClass( "ui-flipped-top ui-flipped-bottom" );
+
+			var within = data.within,
+				win = $( window ),
+				isWindow = $.isWindow( data.within[0] ),
+				withinOffset = ( isWindow ? 0 : within.offset().top ) + within.scrollTop(),
+				outerHeight = isWindow ? within.height() : within.outerHeight(),
+				collisionPosTop = position.top - data.collisionPosition.marginTop,
+				overTop = collisionPosTop - withinOffset,
+				overBottom = collisionPosTop + data.collisionHeight - outerHeight - withinOffset,
+				top = data.my[ 1 ] === "top",
+				myOffset = top ?
+					-data.elemHeight :
+					data.my[ 1 ] === "bottom" ?
+						data.elemHeight :
+						0,
+				atOffset = data.at[ 1 ] === "top" ?
+					data.targetHeight :
+					-data.targetHeight,
+				offset = -2 * data.offset[ 1 ],
+				newOverTop,
+				newOverBottom;
+			if ( overTop < 0 ) {
+				newOverBottom = position.top + myOffset + atOffset + offset + data.collisionHeight - outerHeight - withinOffset;
+				if ( ( position.top + myOffset + atOffset + offset) > overTop && ( newOverBottom < 0 || newOverBottom < Math.abs( overTop ) ) ) {
+					data.elem
+						.addClass( "ui-flipped-bottom" );
+
+					position.top += myOffset + atOffset + offset;
+				}
+			}
+			else if ( overBottom > 0 ) {
+				newOverTop = position.top -  data.collisionPosition.marginTop + myOffset + atOffset + offset - withinOffset;
+				if ( ( position.top + myOffset + atOffset + offset) > overBottom && ( newOverTop > 0 || Math.abs( newOverTop ) < overBottom ) ) {
+					data.elem
+						.addClass( "ui-flipped-top" );
+
+					position.top += myOffset + atOffset + offset;
+				}
+			}
+		}
+	},
+	flipfit: {
+		left: function() { 
+			$.ui.position.flip.left.apply( this, arguments ); 
+			$.ui.position.fit.left.apply( this, arguments );
+		},
+		top: function() { 
+			$.ui.position.flip.top.apply( this, arguments ); 
+			$.ui.position.fit.top.apply( this, arguments );
+		}
+	}
+};
+
+// fraction support test
+(function () {
+	var testElement, testElementParent, testElementStyle, offsetLeft, i
+		body = document.getElementsByTagName( "body" )[ 0 ], 
+		div = document.createElement( "div" );
+
+	//Create a "fake body" for testing based on method used in jQuery.support
+	testElement = document.createElement( body ? "div" : "body" );
+	testElementStyle = {
+		visibility: "hidden",
+		width: 0,
+		height: 0,
+		border: 0,
+		margin: 0,
+		background: "none"
+	};
+	if ( body ) {
+		jQuery.extend( testElementStyle, {
+			position: "absolute",
+			left: "-1000px",
+			top: "-1000px"
+		});
+	}
+	for ( i in testElementStyle ) {
+		testElement.style[ i ] = testElementStyle[ i ];
+	}
+	testElement.appendChild( div );
+	testElementParent = body || document.documentElement;
+	testElementParent.insertBefore( testElement, testElementParent.firstChild );
+
+	div.style.cssText = "position: absolute; left: 10.7432222px;";
+
+	offsetLeft = $( div ).offset().left;
+	$.support.offsetFractions = offsetLeft > 10 && offsetLeft < 11;
+
+	testElement.innerHTML = "";
+	testElementParent.removeChild( testElement );
+})();
+
+// DEPRECATED
+if ( $.uiBackCompat !== false ) {
+	// offset option
+	(function( $ ) {
+		var _position = $.fn.position;
+		$.fn.position = function( options ) {
+			if ( !options || !options.offset ) {
+				return _position.call( this, options );
+			}
+			var offset = options.offset.split( " " ),
+				at = options.at.split( " " );
+			if ( offset.length === 1 ) {
+				offset[ 1 ] = offset[ 0 ];
+			}
+			if ( /^\d/.test( offset[ 0 ] ) ) {
+				offset[ 0 ] = "+" + offset[ 0 ];
+			}
+			if ( /^\d/.test( offset[ 1 ] ) ) {
+				offset[ 1 ] = "+" + offset[ 1 ];
+			}
+			if ( at.length === 1 ) {
+				if ( /left|center|right/.test( at[ 0 ] ) ) {
+					at[ 1 ] = "center";
+				} else {
+					at[ 1 ] = at[ 0 ];
+					at[ 0 ] = "center";
+				}
+			}
+			return _position.call( this, $.extend( options, {
+				at: at[ 0 ] + offset[ 0 ] + " " + at[ 1 ] + offset[ 1 ],
+				offset: undefined
+			} ) );
+		}
+	}( jQuery ) );
+}
+
+}( jQuery ) );