if (document.images) {
homeF=new Image
homeR=new Image
abouttatankaF=new Image
abouttatankaR=new Image
tatankaaboutbisonF=new Image
tatankaaboutbisonR=new Image
photogalleryF=new Image
photogalleryR=new Image
contactusF=new Image
contactusR=new Image

homeF.src="images/h_off.gif"
homeR.src="images/h_on.gif"
abouttatankaF.src="images/at_off.gif"
abouttatankaR.src="images/at_on.gif"
tatankaaboutbisonF.src="images/ta_off.gif"
tatankaaboutbisonR.src="images/ta_on.gif"
photogalleryF.src="images/pg_off.gif"
photogalleryR.src="images/pg_on.gif"
contactusF.src="images/cu_off.gif"
contactusR.src="images/cu_on.gif"


}
else {
homeF=""
homeR=""
abouttatankaF=""
abouttatankaR=""
tatankaaboutbisonF=""
tatankaaboutbisonR=""
photogalleryF=""
photogalleryR=""
contactusF=""
contactusR=""

document.home=""
document.abouttatanka=""
document.tatankaaboutbison=""
document.photogallery=""
document.contactus=""

}