if (document.images){


nihtc_view_flashOff=new Image
nihtc_skip_flashOff=new Image
nihtc_site_searchOff=new Image
nihtc_hhsu_homeOff=new Image
nihtc_hhs_homeOff=new Image
nihtc_osmp_homeOff=new Image
nihtc_nih_homeOff=new Image
nihtc_homeOff=new Image

nihtc_view_flashOn=new Image
nihtc_skip_flashOn=new Image
nihtc_site_searchOn=new Image
nihtc_hhsu_homeOn=new Image
nihtc_hhs_homeOn=new Image
nihtc_osmp_homeOn=new Image
nihtc_nih_homeOn=new Image
nihtc_homeOn=new Image

nihtc_view_flashOff.src="images/nihtc_view_flash_off.gif"
nihtc_skip_flashOff.src="images/nihtc_skip_flash_off.gif"
nihtc_site_searchOff.src="images/nihtc_level2_site_search_off.gif"
nihtc_hhsu_homeOff.src="images/nihtc_level2_hhsu_home_off.gif"
nihtc_hhs_homeOff.src="images/nihtc_level2_hhs_home_off.gif"
nihtc_osmp_homeOff.src="images/nihtc_level2_osmp_home_off.gif"
nihtc_nih_homeOff.src="images/nihtc_level2_nih_home_off.gif"
nihtc_homeOff.src="images/home_off.gif"

nihtc_view_flashOn.src="images/nihtc_view_flash_on.gif"
nihtc_skip_flashOn.src="images/nihtc_skip_flash_on.gif"
nihtc_site_searchOn.src="images/nihtc_level2_site_search_on.gif"
nihtc_hhsu_homeOn.src="images/nihtc_level2_hhsu_home_on.gif"
nihtc_hhs_homeOn.src="images/nihtc_level2_hhs_home_on.gif"
nihtc_osmp_homeOn.src="images/nihtc_level2_osmp_home_on.gif"
nihtc_nih_homeOn.src="images/nihtc_level2_nih_home_on.gif"
nihtc_homeOn.src="images/home_on.gif"


}

else{

nihtc_view_flashOff=""
nihtc_skip_flashOff=""
nihtc_site_searchOff=""
nihtc_hhsu_homeOff=""
nihtc_hhs_homeOff=""
nihtc_osmp_homeOff=""
nihtc_nih_homeOff=""
nihtc_homeOff=""

nihtc_view_flashOn=""
nihtc_skip_flashOn=""
nihtc_site_searchOn=""
nihtc_hhsu_homeOn=""
nihtc_hhs_homeOn=""
nihtc_osmp_homeOn=""
nihtc_nih_homeOn=""
nihtc_homeOn=""

document.nihtc_view_flash=""
document.nihtc_skip_flash=""
document.nihtc_site_search=""
document.nihtc_hhsu_home=""
document.nihtc_hhs_home=""
document.nihtc_osmp_home=""
document.nihtc_nih_home=""
document.nihtc_home=""

}