function trim(data)
{
	// triming from right
	while(''+data.value.charAt(data.value.length-1)==' ')
		data.value=data.value.substring(0,data.value.length-1);
	// triming from left
	while(''+data.value.charAt(0) == ' ')
		data.value=data.value.substring(1,data.value.length);
}