utf-8编码转换成gb2312(2)

           }  

           return  bstr  +  strutf8;  
}  

function  unicodefromutf8(strutf8)    
{  
           var  bstr  =  "";  
           var  ntotalchars  =  strutf8.length;            //  total  chars  to  be  processed.  
           var  noffset  =  0;                                                            //  processing  point  on  strutf8  
           var  nremainingbytes  =  ntotalchars;            //  how  many  bytes  left  to  be  converted  
           var  noutputposition  =  0;  
           var  icode,  icode1,  icode2;                                    //  the  value  of  the  unicode.  

           while  (noffset  <  ntotalchars)  
           {  
                       icode  =  strutf8.charcodeat(noffset);  
                       if  ((icode  &  0x80)  ==  0)                                    //  1  byte.