if (document.images)

{

	aboutNorm = new Image				// normal position button image

	chartsNorm = new Image

	homeNorm = new Image

	lessonsNorm = new Image

	linksNorm = new Image

	policyNorm = new Image

	scheduleNorm = new Image

	studentsNorm = new Image

	tuitionNorm = new Image

	

	aboutNorm.src = "buttons/btnNormAbout.gif"   // assign source images

	chartsNorm.src = "buttons/btnNormCharts.gif"

	homeNorm.src = "buttons/btnNormHome.gif"

	lessonsNorm.src = "buttons/btnNormLessons.gif"

	linksNorm.src = "buttons/btnNormLinks.gif"

	policyNorm.src = "buttons/btnNormPolicy.gif"

	scheduleNorm.src = "buttons/btnNormSchedule.gif"

	studentsNorm.src = "buttons/btnNormStudents.gif"

	tuitionNorm.src = "buttons/btnNormTuition.gif"

	

	aboutOver = new Image				// over position button image

	chartsOver = new Image

	homeOver = new Image

	lessonsOver = new Image

	linksOver = new Image

	policyOver = new Image

	scheduleOver = new Image

	studentsOver = new Image

	tuitionOver = new Image

	

	aboutOver.src = "buttons/btnOverAbout.gif"   // assign source images

	chartsOver.src = "buttons/btnOverCharts.gif"

	homeOver.src = "buttons/btnOverHome.gif"

	lessonsOver.src = "buttons/btnOverLessons.gif"

	linksOver.src = "buttons/btnOverLinks.gif"

	policyOver.src = "buttons/btnOverPolicy.gif"

	scheduleOver.src = "buttons/btnOverSchedule.gif"

	studentsOver.src = "buttons/btnOverStudents.gif"

	tuitionOver.src = "buttons/btnOverTuition.gif"

}

else

{

	aboutNorm = ""				// prevents errors in older browsers

	chartsNorm = ""

	homeNorm = ""

	lessonsNorm = ""

	linksNorm = ""

	policyNorm = ""

	scheduleNorm = ""

	studentsNorm = ""

	tuitionNorm = ""

	

	aboutOver = ""				// prevents errors in older browsers

	chartsOver = ""

	homeOver = ""

	lessonsOver = ""

	linksOver = ""

	policyOver = ""

	scheduleOver = ""

	studentsOver = ""

	tuitionOver = ""

		

	document.aboutImg = ""

	document.chartsImg = ""

	document.homeImg = ""

	document.lessonsImg = ""

	document.linksImg = ""

	document.policyImg = ""

	document.scheduleImg = ""

	document.studentsImg = ""

	document.tuitionImg = ""

}