function tab_action(ptab,pcontent,pclass,pclass2)
{
	$(ptab).children().mouseover(function(){
		var tab=$(this);
		var tab_index=tab.prevAll().length;
		$(ptab).children().removeClass();
		$(ptab).children().addClass(pclass2);
		$(ptab).children().children('.r1').children('img').attr('src','images/tab1_left.gif');
		$(ptab).children().children('.r3').children('img').attr('src','images/tab1_right.gif');
		
		//console.log($(ptab).children().children('.r1').children('img:first').attr('src'));
		//console.log($(ptab).children().children('.r1'));

		tab.removeClass();
		tab.addClass(pclass);
		tab.children('.r1').children('img').attr('src','images/tab2_left.gif');
		tab.children('.r3').children('img').attr('src','images/tab2_right.gif');

		$(pcontent).children().hide();
		$(pcontent).children().eq(tab_index).show();
	});

}