/*intro*/
function loadIntro(){
	$('intro_0').fade('hide'); 
	$('intro_1').fade('hide'); 
	$('intro_label_0').fade('hide'); 
	$('intro_label_1').fade('hide'); 
	$('intro_0').fade(0.8); 
	$('intro_1').fade(0.8); 
	slideIn('intro_0', 'intro_label_0' , 'right', 450, 1500);
	slideIn('intro_1', 'intro_label_1' , 'left', 450,  1500);
}

function loadIntro2(){
	//$('intro_0').fade('hide'); 
	//$('intro_1').fade('hide');
	$('intro_label_0').fade('hide'); 
	$('intro_label_1').fade('hide'); 
	fadeIn('intro_0', 'intro_label_0');
	fadeIn('intro_1', 'intro_label_1');
}


function loadIntro3(){
	$('intro_0').fade('hide'); 
	$('intro_1').fade('hide'); 
	$('intro_label_0').fade('hide'); 
	$('intro_label_1').fade('hide'); 
	$('intro_0').fade(0.8); 
	$('intro_1').fade(0.8); 
	slideIn('intro_0', 'intro_label_0' , 'right', 450, 1500);
	slideIn('intro_1', 'intro_label_1' , 'right', 0,  1500);
}

function slideIn(object_id, object_id_2, direction, end, duration){
		slide = new Fx.Tween(object_id, {property: direction, duration: duration });	
		slide.start(end).chain(function() {
			$(object_id_2).fade('in');
			$(object_id).fade('in')			
		});
}

function fadeIn(object_id, object_id_2){
		fade = new Fx.Tween(object_id, {property: 'opacity', duration: 2000 });	
		fade.start(0,1).chain(function() {
			$(object_id_2).fade('in');
			$(object_id).fade('in')				
		});
}

/* contact */
function clearInput(field){
 	if (field.defaultValue==field.value)
	{
		field.value = "";
		field.style.color = "#222222";
	}
}

function resetInput(field, value){
	if (field.value == null || field.value.trim() == '')
	{
		field.value = field.defaultValue;
		field.style.color = "#777777";
	}
}

/* prototype */
String.prototype.trim = function() {
    return this.replace(/^\s+|\s+$/g,"");
}