//页面跳转
function page_go(url,extend,split,page,count){
	if (page==""){
		alert("请输入跳转页面");
	}else{
		if (page<=count&&page>=0){
			if (page==1||page==0){
				window.location=url+extend;
			}else{
				window.location=url+split+page+extend;
			}
		}else{
			alert("跳转页面不存在");
		}
	}
}