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/*!
 *
----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * <jevin9@gmail.com> wrote this file. As long as you retain this
notice you
 * can do whatever you want with this stuff. If we meet some day, and you
think
 * this stuff is worth it, you can buy me a beer in return. Jevin O.
Sewaruth
 *
----------------------------------------------------------------------------
 *
 * Autogrow Textarea Plugin Version v3.0
 * http://www.technoreply.com/autogrow-textarea-plugin-3-0
 *
 * THIS PLUGIN IS DELIVERD ON A PAY WHAT YOU WHANT BASIS. IF THE PLUGIN WAS
USEFUL TO YOU, PLEASE CONSIDER BUYING THE PLUGIN HERE :
 * https://sites.fastspring.com/technoreply/instant/autogrowtextareaplugin
 *
 * Date: October 15, 2012
 */

jQuery.fn.autoGrow = function(options) {
	return this.each(function() {
		var settings = jQuery.extend({
			extraLine: true,
		}, options);

        var mirror;

		var createMirror = function(textarea) {
			jQuery(textarea).after('<div
class="autogrow-textarea-mirror"></div>');
			return jQuery(textarea).next('.autogrow-textarea-mirror')[0];
		};

		var sendContentToMirror = function (textarea) {
			mirror.innerHTML = String(textarea.value)
				.replace(/&/g, '&amp;')
				.replace(/"/g, '&quot;')
				.replace(/'/g, '&#39;')
				.replace(/</g, '&lt;')
				.replace(/>/g, '&gt;')
				.replace(/\n/g, '<br />') +
				(settings.extraLine? '.<br/>.' : '')
			;

			if (jQuery(textarea).height() !== jQuery(mirror).height())
				jQuery(textarea).height(jQuery(mirror).height());
		};

		var growTextarea = function() {
			sendContentToMirror(this);
		};

		// Create a mirror
		mirror = createMirror(this);

		// Style the mirror
		mirror.style.display = 'none';
		mirror.style.wordWrap = 'break-word';
		mirror.style.whiteSpace = 'pre-wrap';
		mirror.style.padding = jQuery(this).css('paddingTop') + '
' +
			jQuery(this).css('paddingRight') + ' ' +
			jQuery(this).css('paddingBottom') + ' ' +
			jQuery(this).css('paddingLeft');

		mirror.style.borderStyle = jQuery(this).css('borderTopStyle') +
' ' +
			jQuery(this).css('borderRightStyle') + ' ' +
			jQuery(this).css('borderBottomStyle') + ' ' +
			jQuery(this).css('borderLeftStyle');

		mirror.style.borderWidth = jQuery(this).css('borderTopWidth') +
' ' +
			jQuery(this).css('borderRightWidth') + ' ' +
			jQuery(this).css('borderBottomWidth') + ' ' +
			jQuery(this).css('borderLeftWidth');
		mirror.style.width = jQuery(this).css('width');
		mirror.style.fontFamily = jQuery(this).css('font-family');
		mirror.style.fontSize = jQuery(this).css('font-size');
		mirror.style.lineHeight = jQuery(this).css('line-height');
		mirror.style.letterSpacing =
jQuery(this).css('letter-spacing');

		// Style the textarea
		this.style.overflow = 'hidden';
		this.style.minHeight = this.rows+'em';

		// Bind the textarea's event
		this.onkeyup = growTextarea;
		this.onfocus = growTextarea;

		// Fire the event for text already present
		sendContentToMirror(this);

	});
};