if (document.images) {
		
		// Off States
		imgNAV1off=new Image(); imgNAV1off.src="images/nav_home_off.png";
		imgNAV2off=new Image(); imgNAV2off.src="images/nav_pediatrics_off.png";
		imgNAV3off=new Image(); imgNAV3off.src="images/nav_adults_off.png";
		imgNAV4off=new Image(); imgNAV4off.src="images/nav_occtherapy_off.png";
		imgNAV5off=new Image(); imgNAV5off.src="images/nav_employment_off.png";
		imgNAV6off=new Image(); imgNAV6off.src="images/nav_contact_off.png";
		imgNAV7off=new Image(); imgNAV7off.src="images/nav_ourstory_off.png";
		imgNAV8off=new Image(); imgNAV8off.src="images/nav_links_off.png";
		
		// On States
		imgNAV1on=new Image(); imgNAV1on.src="images/nav_home_on.png";
		imgNAV2on=new Image(); imgNAV2on.src="images/nav_pediatrics_on.png";
		imgNAV3on=new Image(); imgNAV3on.src="images/nav_adults_on.png";
		imgNAV4on=new Image(); imgNAV4on.src="images/nav_occtherapy_on.png";
		imgNAV5on=new Image(); imgNAV5on.src="images/nav_employment_on.png";
		imgNAV6on=new Image(); imgNAV6on.src="images/nav_contact_on.png";
		imgNAV7on=new Image(); imgNAV7on.src="images/nav_ourstory_on.png";
		imgNAV8on=new Image(); imgNAV8on.src="images/nav_links_on.png";
		
	}
	
 function imgOn(imgName) {
 	if (document.images) {
 		document[imgName].src=eval(imgName + "on.src");
 	}
 }

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