$(document).ready(function(){
	var siz_cont = $("#mainCont").height();
	var siz_y = $(window).height();
	//alert(siz_cont);
	if(siz_y > siz_cont) {
		var xxx = siz_y - 128;
		$("#mainCont").height(xxx);
		}
});

function opencat(id) {
	$(".padd").slideUp();
	$("#sub_" + id).slideDown();
		
}