function bannerAnimation(ini)
{
	//if(typeof retardo == "undefined") retardo = 0;	
	if(typeof mainPosition == "undefined") mainPosition = ini;
	if(typeof imageToggle == "undefined") imageToggle = "url(img/arrow-banner-up.png)";
			
	if (mainPosition == 0){
		$('#master').animate({top:562},'slow');
		imageToggle = "url(img/arrow-banner-up.png)";
		mainPosition = 1;
	}
	else if (mainPosition ==1) {
		$('#master').animate({top:177},'slow');
		imageToggle = "url(img/arrow-banner-down.png)";
		mainPosition = 0;
	}	

	$('#header-toggle').css("backgroundImage", imageToggle);
}