var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
/*RGB颜色转换为16进制*/
String.prototype.colorHex = function(){
     var that = this;
     if(/^(rgb|RGB)/.test(that)){
          var aColor = that.replace(/(?:\(|\)|rgb|RGB)*/g,"").split(",");
          var strHex = "#";
          for(var i=0; i<aColor.length; i++){
               var hex = Number(aColor[i]).toString(16);
               if(hex === "0"){
                    hex += hex;    
               }
               strHex += hex;
          }
          if(strHex.length !== 7){
               strHex = that;    
          }
          return strHex;
     }else if(reg.test(that)){
          var aNum = that.replace(/#/,"").split("");
          if(aNum.length === 6){
               return that;    
          }else if(aNum.length === 3){
               var numHex = "#";
               for(var i=0; i<aNum.length; i+=1){
                    numHex += (aNum[i]+aNum[i]);
               }
               return numHex;
          }
     }else{
          return that;    
     }
};

//-------------------------------------------------

/*16进制颜色转为RGB格式*/
String.prototype.colorRgb = function(){
     var sColor = this.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 "RGB(" + sColorChange.join(",") + ")";
     }else{
          return sColor;    
     }
};



/*function (){
     var sColor = this.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 "RGB(" + sColorChange.join(",") + ")";
     }else{
          return sColor;    
     }
}*/