function checkautoextend(parentobj)
{
	if(parentobj)
		parentobj = $(parentobj);
	else
		parentobj = $(".lhsite_prjv3_autoext");
	
	parentobj.each(function () {
		calcheight = 0;
		$(this).find(".lhsite_prjv3_floatblock").each(function () {
			if($(this).position().top + $(this).outerheight() > calcheight)
				calcheight = $(this).position().top + $(this).outerheight();
		});

		if(calcheight > $(this).height())//$(this).find(".lhsite_prjv3_floatblock").size() > 0 && 
			$(this).css("height", calcheight + "px");
	});
	$(".lhsite_prjv3_block").css("border", "");		//用来纠正恶心ie6下的bug！
}

$(document).ready(function () {
	checkautoextend();
	//$("#lhsite_prjv3_pagebg").css("visibility", "visible");
});

$(window).load(function () {
	checkautoextend();
});