function calculaPosition(){
	posX = ($(window).width() - 2200) - ($(window).width() - 980)/2;
	pos = posX + 'px 25px';
	heightY = $(window).height() - 62;
	heightY_int = $(window).height() - 140;
	$("#footer").css("background-position",pos);
	$("#general").css("min-height",heightY);
	$("#general_int").css("min-height",heightY_int);
}