why value changed

someone

os winxp sp3
sahi v3.5

var $t=123456789012345678;
_debug($t);

It's display _dubug(123456789012345600) the value changed, why?

globalworming

huh?! nice^^

var $t=123456789012345678;
_alert($t); -> 123456789012345680

Sahi
Version :
V3.5
Build :
2012-08-20 (change log)
Check for updates
Browser
UserAgent :
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:12.0) Gecko/20100101 Firefox/12.0
Name :
Mozilla Firefox
Version :
5.0 (X11)
Native XmlHTTPRequest :
true
Is Java enabled :
true
Is cookie enabled :
true

Operating System
Name :
Linux
Version :
3.0.0-19-generic
Architecture :
amd64
Is process list available :
true

Java
Java Installed Directory :
/usr/lib/jvm/java-6-openjdk/jre
JRE Version :
1.6.0_23
Is keytool available :
true

someone

Sahi

Version : V3.5
Build : 2011-07-19 (change log)
Check for updates

---

Browser

UserAgent : Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; KB974489; SV1; TencentTraveler 4.0; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E)
Name : Microsoft Internet Explorer
Version : 4.0 (compatible; MSIE 6.0; Windows NT 5.1; KB974489; SV1; TencentTraveler 4.0; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E)
Native XmlHTTPRequest : false
Is Java enabled : true
Is cookie enabled : true

---

Operating System

Name : Windows XP
Version : 5.1
Architecture : x86
Is process list available : true

---

Java

Java Installed Directory : C:\Program Files\Java\jre6
JRE Version : 1.6.0_33
Is keytool available : true