function trimchar(pastr){

	var lenstr = pastr.length;

	for(var i = 0 ; pastr.charAt(i) == " "; i++);

	for(var j = pastr.length - 1; pastr.charAt(j)== " "; j--);

	j++;

	if (i > j)

		pastr = "";

	else

		pastr = pastr.substring(i,j);

	return pastr;

}