Jquery记时跳转

<script>
function auto_jump() {
	secs = $("#init_value").val() - 1;
	$("#init_value").val(secs);
        if(secs < 0){return false;}
	if(secs == 0){
		clearInterval(time);
		$("#showDiv").html('正在载入...');
		window.location.href='eyexiaobo.iteye.com';
	}else{
		$("#showDiv").html(secs+' 秒后自动跳转');
	}
}
$(function(){
	var value = 5;
	$("body").append("<input type='hidden' id='init_value' value="+value+" />");
	time = setInterval('auto_jump()',1000);
})
</script>