怎么用VBScript在客户端把string类型的数据转换成dbl的呢?

在IE5下,怎么用VBScript在客户端把string类型的数据转换成dbl的呢?
[42 byte] By [huangcaibing-Mike] at [2008-6-4]
# 1
cdbl(str)
fokker-独孤龙 at 2007-10-29 > top of Msdn China Tech,Web,ASP...
# 2
<script language=vbs>msgbox cdbl("3.14")</script>
qiushuiwuhen-秋水无恨 at 2007-10-29 > top of Msdn China Tech,Web,ASP...
# 3
txtDayCoal_onfocusin
txtDayCoal_onfocusin
请问各位大哥:
我的textBox怎么在IE5下没有这两个事件:_onfocusin、_onfocusin
在IE6下有!
huangcaibing-Mike at 2007-10-29 > top of Msdn China Tech,Web,ASP...
# 4
onfocus和onblur
fokker-独孤龙 at 2007-10-29 > top of Msdn China Tech,Web,ASP...