/*
 * jQuery Animate To Class
 * Copyright 2008 Igor Frias Vieira
 * http://igorvieira.com/blog/animate-to-class/
 *
 * Released under the MIT and GPL licenses.
 */

(function($)
{
        $.fn.extend({
                animateToClass : function(to, duration, easing, callback)
                {
                        if(!to){ return this; }
                        
                        styles = selectStyle(to);
                        
                        if(!styles) return this;
                        
                        return this.animate(styles, duration, easing, callback);
                }
        });
        
        function selectStyle(sel)
        {
                if(sel.substr(0,1) != ".")
                {
                        sel = "." + sel;
                }
                
                for(var cont = 0; cont < document.styleSheets.length; cont++)
                {
                        v = document.styleSheets[cont];
                        
                        attrClass = selectAttr(sel, v);
                        if(attrClass != false)
                        {
                                break;  
                        }

                }
                
                if(!attrClass)
                {
                        attrClass = Array();
                }
                
                objStyle = {};
                
                if(attrClass == "")
                {
                        return false;
                }
                
                if(attrClass.match(";"))
                {
                        attrClass = attrClass.split(";");
                }
                else
                {
                        attrClass = [attrClass];
                }
                
                $(attrClass).each(function(i,v){
                        if(v != ""){
                                v = v.split(":");
                                v[0] = toCamelCase(v[0]);
                                
                                objStyle[v[0]] = $.trim(v[1]);  
                                
                        }
                });
                return objStyle;
        }
        
        function selectAttr(sel, v)
        {
                attrClass = false;      
                        
                if($.browser.msie)
                {
                        if(v.rules.length > 0)
                        {
                                $(v.rules).each(function(i2,v2){
                                        if(sel == v2.selectorText)
                                        {
                                                attrClass = v2.style.cssText;
                                        }
                                });
                        }
                        else if(v.imports.length > 0)
                        {
                                $(v.imports).each(function(i2,v2){
                                                                                   
                                        if(sel == v2.selectorText)
                                        {
                                                attrClass = v2.style.cssText;
                                        }
                                        else if(v2 == "[object]" || v2 == "[Object CSSStyleSheet]" || v2 == "[object CSSImportRule]")
                                        {
                                                return selectAttr(sel, v2);
                                        }
                                });
                        }
                }
                else
                {
                        $(v.cssRules).each(function(i2,v2){
                                if(sel == v2.selectorText)
                                {
                                        attrClass = v2.style.cssText;
                                }
                                else if(v2 == "[object CSSImportRule]")
                                {
                                        return selectAttr(sel, v2.styleSheet);
                                }
                        });
                }
                
                return attrClass;
        }
        
        function toCamelCase(str)
        {
                str = $.trim(str);
                str = str.replace(/-/g, " ");
                str = str.toLowerCase();
                
                strArr = str.split(" ");
                
                var nStr = "";
                $(strArr).each(function(i,v){
                        if(i == 0){
                                nStr += v;
                        }else{
                                /*
                                v = v.split("");
                                v[0] = v[0].toUpperCase();
                                nStr += v.join();
                                */
                                
                                //There was a bug in older version, this correction was sugested by Simon Shepard.
                                nStr += v.substr(0,1).toUpperCase();
                                nStr += v.substr(1,v.length);
                        }
                });
                        
                return nStr;
        }
})(jQuery);