if (document.images){
homeB=new Image
homeW=new Image
booksB=new Image
booksW=new Image
bioB=new Image
bioW=new Image
mediaB=new Image
mediaW=new Image
appearancesB=new Image
appearancesW=new Image
faqB=new Image
faqW=new Image
linksB=new Image
linksW=new Image
contactB=new Image
contactW=new Image

/* secondary navigation */
previewB=new Image
previewW=new Image
suspectB=new Image
suspectW=new Image
lostB=new Image
lostG=new Image
shatterB=new Image
shatterG=new Image
nightFerryB=new Image
nightFerryG=new Image
bookCoversB=new Image
bombproofG=new Image
bombproofB=new Image
bookCoversG=new Image
drowningManB=new Image
drowningManG=new Image
interviewsB=new Image
interviewsW=new Image
galleryB=new Image
galleryW=new Image
photosB=new Image
photosW=new Image
newsletterB=new Image
newsletterW=new Image

homeB.src="../images/nav/navHomeB.gif"
homeW.src="../images/nav/navHomeW.gif"
booksB.src="../images/nav/navBooksB.gif"
booksW.src="../images/nav/navBooksW.gif"
bioB.src="../images/nav/navBioB.gif"
bioW.src="../images/nav/navBioW.gif"
mediaB.src="../images/nav/navMediaB.gif"
mediaW.src="../images/nav/navMediaW.gif"
appearancesB.src="../images/nav/navAppearancesB.gif"
appearancesW.src="../images/nav/navAppearancesW.gif"
faqB.src="../images/nav/navFAQb.gif"
faqW.src="../images/nav/navFAQw.gif"
linksB.src="../images/nav/navLinksB.gif"
linksW.src="../images/nav/navLinksW.gif"
contactB.src="../images/nav/navContactB.gif"
contactW.src="../images/nav/navContactW.gif"
previewB.src="../images/nav/navPreviewB.gif"
previewW.src="../images/nav/navPreviewW.gif"
suspectB.src="../images/nav/navSuspectB.gif"
suspectW.src="../images/nav/navSuspectW.gif"
lostB.src="../images/nav/navLostB.gif"
lostG.src="../images/nav/navLostG.gif"
shatterB.src="../images/nav/navShatterB.gif"
shatterG.src="../images/nav/navShatterG.gif"
nightFerryB.src="../images/nav/navNightFerryB.gif"
nightFerryG.src="../images/nav/navNightFerryG.gif"
bookCoversB.src="../images/nav/navBookCoversB.gif"
bookCoversG.src="../images/nav/navBookCoversG.gif"
drowningManB.src="../images/nav/navDrowningManB.gif"
drowningManG.src="../images/nav/navDrowningManW.gif"
bombproofG.src="../images/nav/navBombproofG.gif"
bombproofB.src="../images/nav/navBombproofB.gif"
interviewsW.src="../images/nav/navInterviewsW.gif"
interviewsB.src="../images/nav/navInterviewsB.gif"
galleryW.src="../images/nav/navGalleryW.gif"
galleryB.src="../images/nav/navGalleryB.gif"
photosB.src="../images/nav/navPhotosB.gif"
photosW.src="../images/nav/navPhotosW.gif"
newsletterB.src="../images/nav/navNewsletterB.gif"
newsletterW.src="../images/nav/navNewsletterW.gif"
}

function chgImg(imgField,newImg) {
		if (document.images) {
		   document[imgField].src=eval(newImg + ".src")
		   }
		}