if (document.images) { 

//Case Studies

leftnav_grasscreteon = new Image();
leftnav_grasscreteon.src = "../images/leftnav_grasscrete_on.gif";

leftnav_grasscreteoff = new Image();
leftnav_grasscreteoff.src = "../images/leftnav_grasscrete_off.gif";

leftnav_porous_pavingon = new Image();
leftnav_porous_pavingon.src = "../images/leftnav_porous_paving_on.gif";

leftnav_porous_pavingoff = new Image();
leftnav_porous_pavingoff.src = "../images/leftnav_porous_paving_off.gif";

leftnav_hospitals_medicalon = new Image();
leftnav_hospitals_medicalon.src = "../../images/leftnav_hospitals_medical_on.gif";

leftnav_hospitals_medicaloff = new Image();
leftnav_hospitals_medicaloff.src = "../../images/leftnav_hospitals_medical_off.gif";

leftnav_hotels_resortson = new Image();
leftnav_hotels_resortson.src = "../../images/leftnav_hotels_resorts_on.gif";

leftnav_hotels_resortsoff = new Image();
leftnav_hotels_resortsoff.src = "../../images/leftnav_hotels_resorts_off.gif";

leftnav_managed_propertieson = new Image();
leftnav_managed_propertieson.src = "../../images/leftnav_managed_properties_on.gif";

leftnav_managed_propertiesoff = new Image();
leftnav_managed_propertiesoff.src = "../../images/leftnav_managed_properties_off.gif";

leftnav_governmenton = new Image();
leftnav_governmenton.src = "../../images/leftnav_government_on.gif";

leftnav_governmentoff = new Image();
leftnav_governmentoff.src = "../../images/leftnav_government_off.gif";

leftnav_educationon = new Image();
leftnav_educationon.src = "../../images/leftnav_education_on.gif";

leftnav_educationoff = new Image();
leftnav_educationoff.src = "../../images/leftnav_education_off.gif";

leftnav_medians_municipalon = new Image();
leftnav_medians_municipalon.src = "../../images/leftnav_medians_municipal_on.gif";

leftnav_medians_municipaloff = new Image();
leftnav_medians_municipaloff.src = "../../images/leftnav_medians_municipal_off.gif";

leftnav_officeon = new Image();
leftnav_officeon.src = "../../images/leftnav_office_on.gif";

leftnav_officeoff = new Image();
leftnav_officeoff.src = "../../images/leftnav_office_off.gif";

leftnav_parks_playgroundson = new Image();
leftnav_parks_playgroundson.src = "../../images/leftnav_parks_playgrounds_on.gif";

leftnav_parks_playgroundsoff = new Image();
leftnav_parks_playgroundsoff.src = "../../images/leftnav_parks_playgrounds_off.gif";

leftnav_plazason = new Image();
leftnav_plazason.src = "../../images/leftnav_plazas_on.gif";

leftnav_plazasoff = new Image();
leftnav_plazasoff.src = "../../images/leftnav_plazas_off.gif";

leftnav_recreation_entertainmenton = new Image();
leftnav_recreation_entertainmenton.src = "../../images/leftnav_recreation_entertainment_on.gif";

leftnav_recreation_entertainmentoff = new Image();
leftnav_recreation_entertainmentoff.src = "../../images/leftnav_recreation_entertainment_off.gif";

leftnav_retailon = new Image();
leftnav_retailon.src = "../../images/leftnav_retail_on.gif";

leftnav_retailoff = new Image();
leftnav_retailoff.src = "../../images/leftnav_retail_off.gif";

leftnav_zooson = new Image();
leftnav_zooson.src = "../../images/leftnav_zoos_on.gif";

leftnav_zoosoff = new Image();
leftnav_zoosoff.src = "../../images/leftnav_zoos_off.gif";

//Design Center
leftnav_bomaniteon = new Image();
leftnav_bomaniteon.src = "../images/leftnav_bomanite_on.gif";

leftnav_bomaniteoff = new Image();
leftnav_bomaniteoff.src = "../images/leftnav_bomanite_off.gif";

leftnav_sandscape_textureon = new Image();
leftnav_sandscape_textureon.src = "../images/leftnav_sandscape_texture_on.gif";

leftnav_sandscape_textureoff = new Image();
leftnav_sandscape_textureoff.src = "../images/leftnav_sandscape_texture_off.gif";

leftnav_custom_finisheson = new Image();
leftnav_custom_finisheson.src = "../images/leftnav_custom_finishes_on.gif";

leftnav_custom_finishesoff = new Image();
leftnav_custom_finishesoff.src = "../images/leftnav_custom_finishes_off.gif";

leftnav_lithocreteon = new Image();
leftnav_lithocreteon.src = "../images/leftnav_lithocrete_on.gif";

leftnav_lithocreteoff = new Image();
leftnav_lithocreteoff.src = "../images/leftnav_lithocrete_off.gif";

leftnav_florsparticon = new Image();
leftnav_florsparticon.src = "../images/leftnav_florspartic_on.gif";

leftnav_florsparticoff = new Image();
leftnav_florsparticoff.src = "../images/leftnav_florspartic_off.gif";

leftnav_polished_concreteon = new Image();
leftnav_polished_concreteon.src = "../images/leftnav_polished_concrete_on.gif";

leftnav_polished_concreteoff = new Image();
leftnav_polished_concreteoff.src = "../images/leftnav_polished_concrete_off.gif";

leftnav_micro_topon = new Image();
leftnav_micro_topon.src = "../images/leftnav_micro_top_on.gif";

leftnav_micro_topoff = new Image();
leftnav_micro_topoff.src = "../images/leftnav_micro_top_off.gif";

leftnav_imprinted_overlayson = new Image();
leftnav_imprinted_overlayson.src = "../images/leftnav_imprinted_overlays_on.gif";

leftnav_imprinted_overlaysoff = new Image();
leftnav_imprinted_overlaysoff.src = "../images/leftnav_imprinted_overlays_off.gif";

leftnav_caulkingon = new Image();
leftnav_caulkingon.src = "../images/leftnav_caulking_on.gif";

leftnav_caulkingoff = new Image();
leftnav_caulkingoff.src = "../images/leftnav_caulking_off.gif";

leftnav_life_floorson = new Image();
leftnav_life_floorson.src = "../images/leftnav_life_floors_on.gif";

leftnav_life_floorsoff = new Image();
leftnav_life_floorsoff.src = "../images/leftnav_life_floors_off.gif";

leftnav_hydrascapeson = new Image();
leftnav_hydrascapeson.src = "../images/leftnav_hydrascapes_on.gif";

leftnav_hydrascapesoff = new Image();
leftnav_hydrascapesoff.src = "../images/leftnav_hydrascapes_off.gif";

leftnav_trson = new Image();
leftnav_trson.src = "../images/leftnav_trs_on.gif";

leftnav_trsoff = new Image();
leftnav_trsoff.src = "../images/leftnav_trs_off.gif";

leftnav_digiacomoon = new Image();
leftnav_digiacomoon.src = "../images/leftnav_digiacomo_on.gif";

leftnav_digiacomooff = new Image();
leftnav_digiacomooff.src = "../images/leftnav_digiacomo_off.gif";

leftnav_rock_divisionon = new Image();
leftnav_rock_divisionon.src = "../images/leftnav_rock_division_on.gif";

leftnav_rock_divisionoff = new Image();
leftnav_rock_divisionoff.src = "../images/leftnav_rock_division_off.gif";


leftnav_water_featureson = new Image();
leftnav_water_featureson.src = "../images/leftnav_water_features_on.gif";

leftnav_water_featuresoff = new Image();
leftnav_water_featuresoff.src = "../images/leftnav_water_features_off.gif";

leftnav_walls_signson = new Image();
leftnav_walls_signson.src = "../images/leftnav_walls_signs_on.gif";

leftnav_walls_signsoff = new Image();
leftnav_walls_signsoff.src = "../images/leftnav_walls_signs_off.gif";

leftnav_porous_pavingon = new Image();
leftnav_porous_pavingon.src = "../images/leftnav_porous_paving_on.gif";

leftnav_porous_pavingoff = new Image();
leftnav_porous_pavingoff.src = "../images/leftnav_porous_paving_off.gif";

leftnav_exterioron = new Image();
leftnav_exterioron.src = "../images/leftnav_exterior_on.gif";

leftnav_exterioroff = new Image();
leftnav_exterioroff.src = "../images/leftnav_exterior_off.gif";

leftnav_interioron = new Image();
leftnav_interioron.src = "../images/leftnav_interior_on.gif";

leftnav_interioroff = new Image();
leftnav_interioroff.src = "../images/leftnav_interior_off.gif";

leftnav_ch_icon = new Image();
leftnav_ch_icon.src = "../images/leftnav_ch_ic_on.gif";

leftnav_ch_icoff = new Image();
leftnav_ch_icoff.src = "../images/leftnav_ch_ic_off.gif";

leftnav_spec_sheetson = new Image();
leftnav_spec_sheetson.src = "../images/leftnav_spec_sheets_on.gif";

leftnav_spec_sheetsoff = new Image();
leftnav_spec_sheetsoff.src = "../images/leftnav_spec_sheets_off.gif";

leftnav_pattern_chartson = new Image();
leftnav_pattern_chartson.src = "../images/leftnav_pattern_charts_on.gif";

leftnav_pattern_chartsoff = new Image();
leftnav_pattern_chartsoff.src = "../images/leftnav_pattern_charts_off.gif";

leftnav_color_chartson = new Image();
leftnav_color_chartson.src = "../images/leftnav_color_charts_on.gif";

leftnav_color_chartsoff = new Image();
leftnav_color_chartsoff.src = "../images/leftnav_color_charts_off.gif";

}

function on(imagename) {
    if (document.images) {
		document[ imagename ].src = eval( imagename + "on.src" );
    }
  }
function off (imagename) {
	if (document.images) {
		document[ imagename ].src = eval( imagename + "off.src" );
	}
}