function strip_tags(str, allowed_tags) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Luke Godfrey
    // +      input by: Pul
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   bugfixed by: Onno Marsman
    // +      input by: Alex
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: Marc Palau
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: strip_tags('<p>Kevin</p> <br /><b>van</b> <i>Zonneveld</i>', '<i><b>');
    // *     returns 1: 'Kevin <b>van</b> <i>Zonneveld</i>'
    // *     example 2: strip_tags('<p>Kevin <img src="someimage.png" onmouseover="someFunction()">van <i>Zonneveld</i></p>', '<p>');
    // *     returns 2: '<p>Kevin van Zonneveld</p>'
    // *     example 3: strip_tags("<a href='http://kevin.vanzonneveld.net'>Kevin van Zonneveld</a>", "<a>");
    // *     returns 3: '<a href='http://kevin.vanzonneveld.net'>Kevin van Zonneveld</a>'
 
    var key = '', tag = '', allowed = false;
    var matches = allowed_array = [];
 
    var replacer = function(search, replace, str) {
        return str.split(search).join(replace);
    };
 
    // Build allowes tags associative array
    if (allowed_tags) {
        allowed_array = allowed_tags.match(/([a-zA-Z]+)/gi);
    }
  
    str += '';
 
    // Match tags
    matches = str.match(/(<\/?[^>]+>)/gi);
 
    // Go through all HTML tags
    for (key in matches) {
        if (isNaN(key)) {
            // IE7 Hack
            continue;
        }
 
        // Save HTML tag
        html = matches[key].toString();
 
        // Is tag not in allowed list? Remove from str!
        allowed = false;
 
        // Go through all allowed tags
        for (k in allowed_array) {
            // Init
            allowed_tag = allowed_array[k];
            i = -1;
 
            if (i != 0) { i = html.toLowerCase().indexOf('<'+allowed_tag+'>');}
            if (i != 0) { i = html.toLowerCase().indexOf('<'+allowed_tag+' ');}
            if (i != 0) { i = html.toLowerCase().indexOf('</'+allowed_tag)   ;}
 
            // Determine
            if (i == 0) {
                allowed = true;
                break;
            }
        }
 
        if (!allowed) {
            str = replacer(html, "", str); // Custom replace. No regexing
        }
    }
 
    return str;
}


(function($){
	$.fn.jTruncate = function(options) {
	   
		var defaults = {
			length: 500,
			minTrail: 20,
			moreText: "more",
			lessText: "less",
			ellipsisText: "...",
			moreAni: "",
			lessAni: ""
		};
		
		var options = $.extend(defaults, options);
	   
		return this.each(function() {
			obj = $(this);
			var body = obj.html();
			var body2 = strip_tags( body, '<br>' );
			
			
			// solo mostrar 2 lineas
			length = body2.length;
			if(length){
				brs = body2.split( '<br>' );
				if(brs && 3 < brs.length ){
					body2 = brs[0] + '<br/>' + brs[1];
				}
			}
			
			if(length > options.length + options.minTrail) {
				var splitLocation = body.indexOf(' ', options.length);
				if(splitLocation != -1) {
					// truncate tip
					
					
					
					
					
					var splitLocation = body2.indexOf(' ', options.length);
					
					if( splitLocation == -1 ) splitLocation = options.length;
					
					var str1 = body2.substring(0, splitLocation);
					var str2 = body.substring(splitLocation, body.length - 1);
					obj.html('<span class="truncate_ellipsis">' + str1 + options.ellipsisText + 
						'</span>' + '<span class="truncate_more"></span>');
						
					obj.find('.truncate_more').html( body );
						
						
					obj.find('.truncate_more').css("display", "none");
					
					// insert more link
					obj.append(
						'<div class="clearboth">' +
							'<a href="#" class="truncate_more_link">' + options.moreText + '</a>' +
						'</div>'
					);

					// set onclick event for more/less link
					var moreLink = $('.truncate_more_link', obj);
					var moreContent = $('.truncate_more', obj);
					var ellipsis = $('.truncate_ellipsis', obj);
					moreLink.click(function() {
						if(moreLink.text() == options.moreText) {
							moreContent.show(options.moreAni);
							moreLink.text(options.lessText);
							ellipsis.css("display", "none");
						} else {
							moreContent.hide(options.lessAni);
							moreLink.text(options.moreText);
							ellipsis.css("display", "inline");
						}
						return false;
				  	});
				}
			} // end if
			
		});
	};
})(jQuery);