function Trim(str){
	var ini=0;
	var fin=str.length-1;
	var x = 0;
	var y = fin;
	var z = 0;
	var str_final = '';
	while(ini<=fin && str.charAt(x)==" ")
		x = x + 1;
	while(fin>=0 && str.charAt(y)==" ")
		y = y -1;
	for(i=x; i<=y; i++)
		str_final += str.charAt(i);
	return str_final;
}