var platform = new PLATFORM();

function PLATFORM(url) {
		
	// object uebergeben doku http://colorpowered.com/colorbox/
	this.layer = function(obj) {
		$.fn.colorbox(obj);
	}
	
	this.clearText = function(field){
		if (field.defaultValue == field.value) field.value = '';
	    else if (field.value == '') field.value = field.defaultValue;
	}
	
	this.showBox = function (obj, box) {
		$('#'+box).slideDown();
	}

	this.closeBox = function(obj, box) {
		$('#'+box).slideUp();
	}

}

var newsletter = new NEWSLETTER();
function NEWSLETTER() {
	var activObj;
	this.checkValueInField = function (obj, start_value) {
		var field = $(obj).val();
		
		if(field == start_value) {
			$(obj).val('');
			newsletter.activObj=obj;
		}
		else {
			return
		}
	}

	this.checkEmail = function (email) 	{
		if(newsletter.activObj) {
			var a = false;
		 	var res = false;
		 	if(typeof(RegExp) == 'function') {
			  	var b = new RegExp('abc');
			  	if(b.test('abc') == true){a = true;}
		  	}

			if(a == true) {
				reg = new RegExp('^([a-zA-Z0-9\-\.\_]+)'+
			                   '(\@)([a-zA-Z0-9\-\.]+)'+
			                   '(\.)([a-zA-Z]{2,4})$');
				res = (reg.test(email));
			}
			else {
				res = (email.search('@') >= 1 &&
			         email.lastIndexOf('.') > email.search('@') &&
			         email.lastIndexOf('.') >= email.length-5)
			}
			if(!res) {
				newsletter.showMessage();
				return false;
			}
			else {
				newsletter.hideMessage();
			 }
		}
	}
	
	this.showMessage = function() {
		var id =$(newsletter.activObj).attr('id');
		$("#"+id+"_error_message").show('slow');
	}

	this.hideMessage = function() {
		var id =$(newsletter.activObj).attr('id');
		$("#"+id+"_error_message").hide('slow');
		$("#newsletter_box_form").submit();
	}
}