//客户端去空格函数
function javaTrim(str){
  var i=0;
  var j;
  var len=str.length;
  trimstr="";
  j=len-1;
  if(j<0) return trimstr;
  flagbegin= true;
  flagend= true;
  while (flagbegin== true){
   if (str.charAt(i)==" "){
    i++;
    flagbegin=true;
   }
   else{
    flagbegin=false;
   }
  } 
  while (flagend==true) {
   if (str.charAt(j)==" "){
    j--;flagend=true;
   }
   else{
    flagend=false;
   }
  }
  trimstr=str.substr(i,j-i+1);
  return trimstr;
 }