function inputOver(_field,_str){
	var re = new RegExp(_str,'i');
	if(re.test(_field.value)){
		_field.className = "blackText";
		_field.value = "";
		//_field.focus();
	}
}

function inputOut(_field,_str){
	var re = / /gi;
	var re = new RegExp(_str,'i');
	if(_field.value.replace(re,"")==""||re.test(_field.value)){
		_field.className = "grayText";
		_field.value = _str;
		//_field.blur();
	}
}