1. 一个类似于Calendar日期控件，不用再刷新页面。
2. 判断文本控件里的值是否能转换成日期型。

.htc 例1：
/*
*xpMask.htc
*
*/

//------------------------------------------------------------------------------------------------------

<PUBLIC:COMPONENT
lightWeight=false
>

<PUBLIC:DEFAULTS
contentEditable=false
tabStop=true
/>

<PUBLIC:attach event="ondocumentready" onevent="initCoolMask()" />
<PUBLIC:attach event="ondetach" onevent="cleanupCoolMask()" />

<PUBLIC:property name="maskType" value="" />
<PUBLIC:property name="realValue" value="" />
<PUBLIC:property name="toolTipStr" value="" />

<script language="VBScript">


sub initCoolMask()
attachEvent "onreadystatechange", GetRef("coolMaskInputBlur")
attachEvent "onfocus", GetRef("coolMaskInputFocus")
attachEvent "onblur", GetRef("coolMaskInputBlur")
coolMaskInputBlur
end sub

sub cleanupCoolMask()
detachEvent "onreadystatechange", GetRef("coolMaskInputBlur")
detachEvent "onfocus", GetRef("coolMaskInputFocus")
detachEvent "onblur", GetRef("coolMaskInputBlur")
end sub

sub coolMaskInputFocus()
with element
if not .realValue = "" then .value = .realValue
.select()
end with
end sub

sub coolMaskInputBlur()
with element
select case ucase(.maskType)
case "DATETIME"
.realValue = .value
.value = maskDatetime(.value)
.toolTipStr = .ToolTip
case "SHORTDATE"
.realValue = .value
if maskDate(.value, "short") = formatDateTime("1900-1-1 0:00:00", vbShortDate) then
.value = ""
.toolTipStr = "Format: yyyy-mm-dd "
else
.value = maskDate(.value, "short")
if not .realValue = "" then
.toolTipStr = "Format: "&.realValue
else
.toolTipStr = "Format: yyyy-mm-dd "
end if
end if
.title =.toolTipStr
case "MEDIUMDATE"
.realValue = .value
.value = maskDate(.value, "medium")
case "LONGDATE"
.realValue = .value
.value = maskDate(.value, "long")
case "ZIPCODE"
.realValue = parseChar(.value, array(" ", "-"))
.value = maskZip(.value)
case "PHONE"
.realValue = parseChar(.value, array(" ", "(", ")", "-", "."))
.value = maskPhone(.value)
case "PERCENT"
.realValue = parseChar(.value, array(" ", "%"))
.value = maskPercent(.value)
case else
.realValue = .value
end select
end with
end sub

function parseChar(sStr, sChar)
dim i, zChar, sNewStr
if typeName(sChar) = "string" then zChar = Array(sChar) else zChar = sChar
sNewStr = sStr
for i = lBound(zChar) to uBound(zChar)
sNewStr = replace(sNewStr, cstr(zChar(i)), "")
next
parseChar = sNewStr
end function

function setViewState(bState)
with element
if not bState then
.runtimeStyle.color = .style.color
else
.runtimeStyle.color = "red"
end if
end with
end function

function maskDate(sValue, sType)
if IsNumeric(sValue) then
'sValue = parseChar(sValue, array(" ", "-", "/", ",", ".", "\", "^", "&", "*", "", "~", "`", "'", "!", "#", "$", "%", "|", "(", ")", "+", "_", "=", ";", "?", ":", "{", "}", "[", "]", "<", ">"))
if len(sValue) = 8 then sValue = left(sValue, 4) & "-" & left(right(sValue, 4), 2) & "-" & right(right(sValue, 4), 2)
if len(sValue) = 6 then sValue = left(sValue, 4) & "-0" & left(right(sValue, 2), 1) & "-0" & right(right(sValue, 2), 1)
end if
dim zMonth
zMonth = array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December")
if len(trim(sValue)) = 0 then
maskDate = ""
setViewState false
elseif not(isDate(sValue)) then
maskDate = "DATE ERROR"
setViewState true
else
select case (sType)
case "medium"
maskDate = day(dateValue(sValue)) & "-" & left(zMonth(month(dateValue(sValue)) - 1), 3) & "-" & year(dateValue(sValue))
case "long"
maskDate = zMonth(month(dateValue(sValue)) - 1) & " " & day(dateValue(sValue)) & ", " & year(dateValue(sValue))
case else
maskDate = formatDateTime(sValue, vbShortDate)
end select
setViewState false
end if
end function

function maskDatetime(sValue)
dim sNewValue
sNewValue = parseChar(sValue, array(" ", "-", "/", ",", ".", "\", "^", "&", "*", "", "~", "`", "'", "!", "#", "$", "%", "|", "(", ")", "+", "_", "=", ";", "?", ":", "{", "}", "[", "]", "<", ">"))
if len(sNewValue) = 0 then
maskDatetime = ""
setViewState false
elseif (len(sNewValue) <> 8 and len(sNewValue) <> 7 and len(sNewValue) <> 6) or not isnumeric(sNewValue) then
maskDatetime = "DATE ERROR"
setViewState true
else
if len(sNewValue) = 8 then sNewValue = left(sNewValue, 4) & "-" & left(right(sNewValue, 4), 2) & "-" & right(right(sNewValue, 4), 2)
if len(sNewValue) = 7 then
if IsNumeric(right(sValue, 2)) then
sNewValue = left(sNewValue, 4) & "-0" & left(right(sNewValue, 3), 1) & "-" & right(right(sNewValue, 3), 2)
else
sNewValue = left(sNewValue, 4) & "-" & left(right(sNewValue, 3), 2) & "-0" & right(right(sNewValue, 3), 1)
end if
end if
if len(sNewValue) = 6 then sNewValue = left(sNewValue, 4) & "-0" & left(right(sNewValue, 2), 1) & "-0" & right(right(sNewValue, 2), 1)
if not(isDate(sNewValue)) then
maskDatetime = "DATE ERROR"
setViewState true
else
'sNewValue = parseChar(sNewValue, array(" ", "-", "/", ",", "."))
maskDatetime = FormatDateTime(sNewValue, 2)
setViewState false
end if
end if
end function

function maskZip(sValue)
dim sNewValue
sNewValue = parseChar(sValue, array(" ", "-"))
if len(sNewValue) = 0 then
maskZip = ""
setViewState false
elseif (len(sNewValue) <> 5 and len(sNewValue) <> 9) or not isnumeric(sNewValue) then
maskZip = "ZIPCODE ERROR"
setViewState true
else
if len(sNewValue) = 9 then sNewValue = left(sNewValue, 5) & "-" & right(sNewValue, 4)
maskZip = sNewValue
setViewState false
end if
end function

function maskPhone(sValue)
dim sNewValue
sNewValue = parseChar(sValue, array(" ", "(", ")", "-", "."))
if len(sNewValue) = 0 then
maskPhone = ""
setViewState false
elseif (len(sNewValue) <> 7 and len(sNewValue) <> 10) or not isnumeric(sNewValue) then
maskPhone = "PHONE ERROR"
setViewState true
else
select case len(sNewValue)
case 7
maskPhone = left(sNewValue, 3) & "-" & right(sNewValue, 4)
case 10
maskPhone = "(" & left(sNewValue, 3) & ") " & mid(sNewValue, 4, 3) & "-" & right(sNewValue, 4)
end select
setViewState false
end if
end function

function maskPercent(sValue)
dim sNewValue
sNewValue = parseChar(sValue, array(" ", "%"))
if len(sNewValue) = 0 then
maskPercent = ""
setViewState false
else
on error resume next
err.clear
maskPercent = formatPercent(sNewValue)
if err.number = 13 then
on error goto 0
maskPercent = "PERCENT ERROR"
setViewState true
exit function
end if
on error goto 0
setViewState false
end if
end function

</script>

</PUBLIC:COMPONENT>


//------------------------------------------------------------------------------------------------------

.css 例1：
/*
*xpText.css
*
*/

.coolMask
{
FONT-SIZE: 10pt;
BEHAVIOR: url(../Htc/coolMask.htc);
FONT-FAMILY: Verdana, Arial, Helvetica;
}

//------------------------------------------------------------------------------------------------------

页面调用：

<asp:textbox id="birthday" CssClass="coolMask" ondblclick="javascript: setday(this);" maskType="shortDate" runat="server" Width="106px"></asp:textbox>

注意：
CssClass="coolMask" 这个不用说了，大家都知道是什么
ondblclick="javascript: setday(this);" 这是双激事件
maskType="shortDate" maskType属性在coolWindowsCalendar.js中文定义了，
maskType属性类型一共有如下几种：
DATETIME ：日期
SHORTDATE ：日期
MEDIUMDATE ：日期
LONGDATE ：日期
PHONE ：电话号码
PERCENT ：百分数

realValue="" : realValue属性在coolWindowsCalendar.js中文定义了，
realValue ： 用来保存当前值，（ element.realValue = textbox.value）

toolTipStr : toolTipStr 属性在coolWindowsCalendar.js中文定义了，
toolTipStr : 用来显示格式， 就是title提示框,

查看地址：http://print.itgaga.org/PrintERP/OrderManage/Bus_Invoice_EFrame.aspx（填写日期）

源代码：data.rar