function navigation() { var tStr=""; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='\n'; tStr+='

	>	ISDN
	>	ISDN Basics
	>	User Requirements for ISDN
	>	ISDN vs. Analog
	>	ISDN Frequently Asked Questions
	>	ISDN Packages Descriptions
	>	How do I use my ISDN features?

\n'; navigationWriteStr(tStr); } function navigationWriteStr(tStr) { if (is_nav4) // { document.leftNav.document.writeln(tStr); } else // ie or ns6 { document.writeln(tStr); } }