jQuery.fn.inputInit = function(options) {
	var settings = {
		content: '',
		repeat: 0
	};
	if (options) jQuery.extend(settings, options);
	var _this = jQuery(this);
	var _first = true;
	
	// initialize data
	_this.val(settings.content);
	
	// bindding event
	_this.focus(function() {
		if(settings.repeat) {
			if(jQuery.trim(_this.val()) == settings.content) {
				_this.val('');
			}
		}else {
			if(_first) {
				_this.val('');
				_first = false;
			}
		}
	}).blur(function() {
		if(settings.repeat) {
			if(jQuery.trim(_this.val()) == '' || jQuery.trim(_this.val()) == settings.content) {
				_this.val(settings.content);
			}
		}
	});
};