$(document).ready(function(){
	$('#zt').hover(function(){$(this).attr('src','images/tab_ztzx2.gif');},function(){$(this).attr('src','images/tab_ztzx1.gif');});
	$('#hdnr').hover(function(){$(this).attr('src','images/tab_hdyg2.gif');},function(){$(this).attr('src','images/tab_hdyg1.gif');});					   
});
function show_tab(obj,n){
	for(i=1;i<=3;i++){
		$('.tab_con'+i).hide();	
	}
	$('.tab_con'+n).show();	
	if(obj == 'jqdt'){
		$('#jqdt').attr('src','images/tab_jqdt2.gif').hover(function(){$(this).attr('src','images/tab_jqdt2.gif');},function(){$(this).attr('src','images/tab_jqdt2.gif');});
		$('#zt').attr('src','images/tab_ztzx1.gif').hover(function(){$(this).attr('src','images/tab_ztzx2.gif');},function(){$(this).attr('src','images/tab_ztzx1.gif');});
		$('#hdnr').attr('src','images/tab_hdyg1.gif').hover(function(){$(this).attr('src','images/tab_hdyg2.gif');},function(){$(this).attr('src','images/tab_hdyg1.gif');});
	}
	else if(obj == 'zt'){
		$('#jqdt').attr('src','images/tab_jqdt1.gif').hover(function(){$(this).attr('src','images/tab_jqdt2.gif');},function(){$(this).attr('src','images/tab_jqdt1.gif');});
		$('#zt').attr('src','images/tab_ztzx2.gif').hover(function(){$(this).attr('src','images/tab_ztzx2.gif');},function(){$(this).attr('src','images/tab_ztzx2.gif');});
		$('#hdnr').attr('src','images/tab_hdyg1.gif').hover(function(){$(this).attr('src','images/tab_hdyg2.gif');},function(){$(this).attr('src','images/tab_hdyg1.gif');});
	}
	else if(obj == 'hdnr'){
		$('#jqdt').attr('src','images/tab_jqdt1.gif').hover(function(){$(this).attr('src','images/tab_jqdt2.gif');},function(){$(this).attr('src','images/tab_jqdt1.gif');});
		$('#zt').attr('src','images/tab_ztzx1.gif').hover(function(){$(this).attr('src','images/tab_ztzx2.gif');},function(){$(this).attr('src','images/tab_ztzx1.gif');});
		$('#hdnr').attr('src','images/tab_hdyg2.gif').hover(function(){$(this).attr('src','images/tab_hdyg2.gif');},function(){$(this).attr('src','images/tab_hdyg2.gif');});
	}
}