onload=function(){
	if(typeof init!='undefined')init();
	pBottom();
};

onresize=function(){
	if(typeof resize!='undefined')resize();
	pBottom();
};

function pBottom(c){
	var opt=$.extend({main:'main',footer:'footer'},c||{});
	var main=$('#'+opt.main);
	var footer=$('#'+opt.footer);
	var htmlH=$(window).height();
	var footerH=footer.outerHeight({margin:true});
	var descontaH=main.outerHeight({margin:true})-main.height();
	var valor=htmlH-footerH-descontaH;
	if(parseInt($.browser.version)<7&&$.browser.msie)main.css({'height':valor})
	main.css({'min-height':valor})
}