var loaded = false;
				
				function setdef() {
					var layerRef="null", layerStyleRef="null", styleSwitch="null";
				}
				
				if (navigator.appName == "Netscape") {
					layerRef="document.layers";
					styleSwitch="";
				} else {
					layerRef="document.all";
					styleSwitch=".style";	
				}
					
				if (document.images) {
					var hcm_on = new Image;
					hcm_on.src = "/images/top_nav/health_care_management_on.gif";
					var hcm_off = new Image;
					hcm_off.src = "/images/top_nav/health_care_management.gif";
					var wcdm_on = new Image;
					wcdm_on.src = "/images/top_nav/workers_comp_on.gif";
					var wcdm_off = new Image;
					wcdm_off.src = "/images/top_nav/workers_comp.gif";
					var amc_on = new Image;
					amc_on.src = "/images/top_nav/auto_managed_care_on.gif";
					var amc_off = new Image;
					amc_off.src = "/images/top_nav/auto_managed_care.gif";
					var ai_on = new Image;
					ai_on.src = "/images/top_nav/about_intracorp_on.gif";
					var ai_off = new Image;
					ai_off.src = "/images/top_nav/about_intracorp.gif";
					var ci_on = new Image;
					ci_on.src = "/images/top_nav/contact_intracorp_on.gif";
					var ci_off = new Image;
					ci_off.src = "/images/top_nav/contact_intracorp.gif";
					var mc_on = new Image;
					mc_on.src = "/images/top_nav/media_center_on.gif";
					var mc_off = new Image;
					mc_off.src = "/images/top_nav/media_center.gif";
					var js_on = new Image;
					js_on.src = "/images/side_nav/job_seekers_on.gif";
					var js_off = new Image;
					js_off.src = "/images/side_nav/job_seekers.gif";
					
				}
				
				function img_act(imgName) {
    		    	if (document.images) {
    	            	imgOn = eval(imgName + "_on.src");
    	            	document [imgName].src = imgOn;
    	   			}
				}
				
				function img_inact(imgName) {
    	  	  		if (document.images) {
    	            	imgOff = eval(imgName + "_off.src");
    	            	document [imgName].src = imgOff;
    	    		}
				}
		
				function showLayer(layerName) {
					eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
				}
	
				function hideLayer(layerName) {
					eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
				}