function trim(strin)
{var str,j,len,i;
 len=strin.length;
 j=0;  i=0;
 do {
     str=strin.substr(j,1);	 j++;
	 if (str==" ") i++;
	} while (str==" " && j<len)
//get the substring chopping off the blanks starting from i=>up to end of string
 if (i) strin=strin.substr(i);
 //test starting from the last position, one character
 //REMOVE 10/13/blanks
 len=strin.length; j=len-1;
 do {
    str=strin.charCodeAt(j);
	//alert(str);
    if (str==10||str==13||str==32) j--;
    } while (str==10||str==13||str==32 && j>0)
//get the substring chopping off the blanks
 if (j<len-1) strin=strin.substr(0,j+1);
return strin;
}