/**
     * 图片调色
     */
    function Toner()
    {
        /**
         * 更改图片色彩
         * @ img       image对象
         * @ old_color 旧颜色(16进制)
         * @ new_color 新颜色(16进制)
         */
        this.setImageColor = function(image,old_color,new_color)
        {
            image.src = getNewImgColor(image,old_color,new_color);
        }
        
        
        
        /**
         * 更改背景图片颜色
         * @ dom       节点对象
         * @ old_color 旧颜色(16进制)
         * @ new_color 新颜色(16进制)
         */
        this.setBgImageColor = function(dom,old_color,new_color)
        {
            var url = window.getComputedStyle(dom).backgroundImage;
    
            if(url.indexOf('url("') == 0)
            {
                url = url.replace('url("','').replace('")','');
            }
            else
            {
                url = url.replace('url(','').replace(')','');
            }
    
            var image     = new Image();
            var data      = null;
            image.src     = url;
            image.onload  = function(e)
            {
                dom.style.backgroundImage = 'url('+getNewImgColor(image,old_color,new_color)+')';
            }
        }
        
        
        /**
         * 获取新的图片数据
         * @ image     图片对象
         * @ old_color 旧颜色
         * @ new_color 新颜色
         */
        function getNewImgColor(image,old_color,new_color)
        {
            old_color     = toRGB(old_color);
            new_color     = toRGB(new_color);
    
            //画布
            var canvas    = document.createElement("canvas");
            var context   = canvas.getContext('2d');
    
            //绘制图片
            canvas.width  = image.width;
            canvas.height = image.height;
            context.drawImage(image,0,0);
    
            //获取像素
            var imgData = context.getImageData(0,0,canvas.width,canvas.height)
    
            for(var i=0;i<imgData.data.length;i+=4)
            {
                if(imgData.data[i+0] > (old_color[0]-5) && imgData.data[i+0] < (old_color[0]+5))
                {
                    imgData.data[i+0] = new_color[0]
                }
    
                if(imgData.data[i+1] > (old_color[1]-5) && imgData.data[i+1] < (old_color[1]+5))
                {
                    imgData.data[i+1] = new_color[1];
                }
    
                if(imgData.data[i+2] > (old_color[2]-5) && imgData.data[i+2] < (old_color[2]+5))
                {
                    imgData.data[i+2] = new_color[2];
                }
    
                /*
                imgData.data[i+0]=255; //红
                imgData.data[i+1]=0;   //绿
                imgData.data[i+2]=0;   //蓝
                imgData.data[i+3]=0;   //透明度
                */
            }
    
            context.putImageData(imgData,0,0);
    
            return canvas.toDataURL("image/png");
        }
    
    
        /**
         * 16进制转RGB颜色
         * @ hex #E9E9E9
         */
        function toRGB(hex)
        {
            var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
    
            var sColor = hex.toLowerCase();  
    
            if(sColor && reg.test(sColor))
            {
                if(sColor.length === 4)
                {
                    var sColorNew = "#";  
                    for(var i=1; i<4; i+=1)
                    {
                        sColorNew += sColor.slice(i,i+1).concat(sColor.slice(i,i+1));     
                    }  
                    sColor = sColorNew;  
                }
    
                //处理六位的颜色值  
                var sColorChange = [];  
    
                for(var i=1; i<7; i+=2)
                {
                    sColorChange.push(parseInt("0x"+sColor.slice(i,i+2)));    
                } 
    
                return sColorChange;
            }
            else
            {
                return sColor;    
            }  
        }
    
    
        /**
         * RGB转换为16进制
         * @ r 红
         * @ g 绿
         * @ b 蓝
         */
        function toHex(r,g,b) 
        { 
            return '#'+((r << 16) | (g << 8) | b).toString(16); 
        }
    }