简单的js分页脚本

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
<script language="javascript" type="text/javascript" >
function showpage(url,num,c_p)
{ 
var prev=0;var next=0;var temp=0;var html="";
if(parseInt(c_p+3)>num)
{ 
prev=num;
} 
else
{ 
prev=parseInt(c_p+3);
} 
temp=10-(prev-c_p);
if(c_p-temp>0)
{ 
next=c_p-temp;
} 
else
{ 
next=1;
} 
//如果显示的第一页<10，总页数又大于10
if(c_p+3<10&&num>c_p+3)
{ 
for(j=1;j<=10-(c_p+3);j++)
{ 
prev++;
} 
} 
if(c_p!=num)
{ 
html+="<a href='"+url+"index="+(1+c_p)+"'>上一页</a>"+" ";
} 
for (i=prev;i>=next;i--)
{ 
if (i==c_p)
{ 
html+="<font color=red>"+i+" </font";
} 
else
{ 
html+="<a href='"+url+"index="+i+"'>"+i+"</a>"+" ";
} 
} 
if(c_p!=1)
{ 
html+="<a href='"+url+"index="+(c_p-1)+"'>下一页</a>"+" ";
} 
document.getElementById("pagenumber").innerHTML=html+" 转到<input id=\"page\" style=\"width: 33px\" />页 <input type=\"button\" value=\"go\" onclick=\"funcGo()\" />";
} 
function funcLoad()
{ 
var num=100;
var url="testpager.html?";
var index ;
index = getUrlParam("index");
if(index==0)
{ 
index=num;
} 
showpage(url,num,index);
} 
function getUrlParam(name)
{ 
var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
var r = window.location.search.substr(1).match(reg);
if (r!=null)
{ 
return parseInt(unescape(r[2]));
} 
return 0;
} 
function funcGo()
{ 
var num=100;
if(parseInt(document.getElementById("page").value)>0&&parseInt(document.getElementById("page").value)<=num)
{ 
window.location.href="testpager.html?index="+parseInt(document.getElementById("page").value);
} 
else
{ 
alert("页码不存在！");
return false;
} 
} 
</script>
</head>
<body onload="funcLoad(0)">
<form id="form1" runat="server">
<div id="pagenumber">
</div>
</form>
</body>
</html>