var msg  = "华宇家电维修网权威家电维修门户欢迎您的光临！" ;
   var interval = 300;
   var spacelen = 140;
   var space10=" ";
   var seq=0;
   function Scroll(){
      len = msg.length;
      window.status = msg.substring(0, seq+1);
      seq++;
      if ( seq >= len ) { 
          seq = 0; 
          window.status = '';
          window.setTimeout("Scroll();", interval );
      }else{
          window.setTimeout("Scroll();", interval );
      } 
     
   }   
   Scroll();