// JavaScript 输入验证脚本

function  IsNull(ControlID){
 
}
//数字判断函数
function isNumber(s) //数字判断函数
{
    var digits = "0123456789";
    var i = 0;
    var sLength = s.length;

    while ((i < sLength))
    {
        var c = s.charAt(i);
        if (digits.indexOf(c) == -1) return false;
        i++;
    }
}
//去空隔函数 
function Jtrim(str) //去空隔函数
{

    var i = 0;
    var len = str.length;
    if ( str == "" ) return( str );
    j = len -1;
    flagbegin = true;
    flagend = true;
    while ( flagbegin == true && i< len)
    {
    if ( str.charAt(i) == " " )
    {
    i=i+1;
    flagbegin=true;
    }
    else
    {
    flagbegin=false;
    }
    }

    while (flagend== true && j>=0)
    {
    if (str.charAt(j)==" ")
    {
    j=j-1;
    flagend=true;
    }
    else
    {
    flagend=false;
    }
    }

    if ( i > j ) return ("")
    trimstr = str.substring(i,j+1);
    return trimstr;
}