functionJS

function removeSpaces(string) {
    return string.split(' ').join('');
}   

function text_number_only(string){
    return string.replace(/\D/g,"");
}

function number_only(e){
	var key; var keychar;
	
	if (window.event)
		key = window.event.keyCode;
	else if (e)
		key = e.which;
	else
		return true;
	keychar = String.fromCharCode(key);
	keychar = keychar.toLowerCase();
	
	if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27)    )
		return true;
 	else if ((("0123456789").indexOf(keychar) > -1))
		return true;
	else
		return false;
}