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if (document.images) {

nav_pricingRO = new Image
nav_pricing = new Image
nav_safetyRO = new Image
nav_safety = new Image
nav_environmentRO = new Image
nav_environment = new Image
nav_healthRO = new Image
nav_health = new Image
nav_supplyRO = new Image
nav_supply = new Image
nav_serviceRO = new Image
nav_service = new Image
nav_theFutureRO = new Image
nav_theFuture = new Image
nav_conservationRO = new Image
nav_conservation = new Image

nav_pricingRO.src = "images/nav_pricingRO.gif"
nav_pricing.src = "images/nav_pricing.gif"
nav_safetyRO.src = "images/nav_safetyRO.gif"
nav_safety.src = "images/nav_safety.gif"
nav_environmentRO.src = "images/nav_environmentRO.gif"
nav_environment.src = "images/nav_environment.gif"
nav_healthRO.src = "images/nav_healthRO.gif"
nav_health.src = "images/nav_health.gif"
nav_supplyRO.src = "images/nav_supplyRO.gif"
nav_supply.src = "images/nav_supply.gif"
nav_serviceRO.src = "images/nav_serviceRO.gif"
nav_service.src = "images/nav_service.gif"
nav_theFutureRO.src = "images/nav_theFutureRO.gif"
nav_theFuture.src = "images/nav_theFuture.gif"
nav_conservationRO.src = "images/nav_conservationRO.gif"
nav_conservation.src = "images/nav_conservation.gif"

}

else {

nav_pricingRO.src = ""
nav_pricing.src = ""
document.pricing.src = ""
nav_safetyRO.src = ""
nav_safety.src = ""
document.safety.src = ""
nav_environmentRO.src = ""
nav_environment.src = ""
document.environment.src = ""
nav_healthRO.src = ""
nav_health.src = ""
document.health.src = ""
nav_supplyRO.src = ""
nav_supply.src = ""
document.supply.src = ""
nav_serviceRO.src = ""
nav_service.src = ""
document.service.src = ""
nav_theFutureRO.src = ""
nav_theFuture.src = ""
document.theFuture.src = ""
nav_conservationRO.src = ""
nav_conservation.src = ""
document.conservation.src = ""

}

// -->