/* 分页专用脚本 */

function Pagination_CheckIsNumber(str)
{
	if(str.length == 0)
	{
		return false;
	}
	
	var isNumber = 0;
	
	for(i = 0; i < str.length; i++)
	{
		isNumber = 0;	//先把isNumber置为0
		
		for(j = 0; j < 10; j++)
		{
			if(str.charAt(i) == "" + j)
				isNumber = 1;	//找到匹配的数字项，则置为1
		}
		
		if(isNumber == 0)	//找不到匹配的数字，则返回false
			return false;
	}
	
	return true;	//完成检查，返回true
}

function Pagination_Navigate()
{
	if(!Pagination_CheckIsNumber(document.getElementById("PageIndex").value))
	{
		alert("页码必须是正整数，并且不能为空！");
		document.getElementById("PageIndex").value = "";
		document.getElementById("PageIndex").focus();
		return;
	}
	
	if(document.getElementById("PageIndex").value - document.getElementById("PageCount").value > 0)
	{
		alert("页码必须不大于总页数！");
		document.getElementById("PageIndex").value = "";
		document.getElementById("PageIndex").focus();
		return;
	}
	
	if(document.getElementById("PageIndex").value == 0)
	{
		alert("页码必须大于零！");
		document.getElementById("PageIndex").value = "";
		document.getElementById("PageIndex").focus();
		return;
	}
	
	if(document.location.href.search(/PageIndex=[0-9]+/) > -1)
	{
		document.location.href = document.location.href.replace(/PageIndex=[0-9]+/,"PageIndex=" + document.getElementById("PageIndex").value);
	}
	else
	{
		if(document.location.href.indexOf("?") > -1)
		{
			document.location.href = document.location.href + "&PageIndex=" + document.getElementById("PageIndex").value;
		}
		else
		{
			document.location.href = document.location.href + "?PageIndex=" + document.getElementById("PageIndex").value;
		}
	}
	
	if(document.location.href.search(document.getElementById("UrlAddOn").value) < 0)
	{
	    document.location.href += document.getElementById("UrlAddOn").value;
	}
}