if (document.images) {

project1_on = new Image();
project1_on.src = "images/nav_projects_side/project1_ind.gif";
project2_on = new Image();
project2_on.src = "images/nav_projects_side/project2_ind.gif";
project3_on = new Image();
project3_on.src = "images/nav_projects_side/project3_ind.gif";
project4_on = new Image();
project4_on.src = "images/nav_projects_side/project4_ind.gif";
project5_on = new Image();
project5_on.src = "images/nav_projects_side/project5_ind.gif";
project6_on = new Image();
project6_on.src = "images/nav_projects_side/project6_ind.gif";
project7_on = new Image();
project7_on.src = "images/nav_projects_side/project7_ind.gif";
project8_on = new Image();
project8_on.src = "images/nav_projects_side/project8_ind.gif";

project1_off = new Image();
project1_off.src = "images/nav_projects_side/project1.gif";
project2_off = new Image();
project2_off.src = "images/nav_projects_side/project2.gif";
project3_off = new Image();
project3_off.src = "images/nav_projects_side/project3.gif";
project4_off = new Image();
project4_off.src = "images/nav_projects_side/project4.gif";
project5_off = new Image();
project5_off.src = "images/nav_projects_side/project5.gif";
project6_off = new Image();
project6_off.src = "images/nav_projects_side/project6.gif";
project7_off = new Image();
project7_off.src = "images/nav_projects_side/project7.gif";
project8_off = new Image();
project8_off.src = "images/nav_projects_side/project8.gif";
}

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");
	}
}


// Caches the dropdown menus
if (!document.images) {}

else {
//----- browns_program menu ------
	var nav_accomplishments_over = new Image();
	nav_accomplishments_over.src ="images/nav_browns_accomp_over.gif";
	var nav_mission_over = new Image();
	nav_mission_over.src ="images/nav_browns_mission_over.gif";
	var nav_staff_over = new Image();
	nav_staff_over.src ="images/nav_browns_staff_over.gif";
	
//----- projects menu ----
	var nav_project1_over = new Image();
	nav_project1_over.src ="images/nav_project1_over.gif";
	var nav_project2_over = new Image();
	nav_project2_over.src ="images/nav_project2_over.gif";
	var nav_project3_over = new Image();
	nav_project3_over.src ="images/nav_project3_over.gif";
	var nav_project4_over = new Image();
	nav_project4_over.src ="images/nav_project4_over.gif";
	var nav_project5_over = new Image();
	nav_project5_over.src ="images/nav_project5_over.gif";
	var nav_project6_over = new Image();
	nav_project6_over.src ="images/nav_project6_over.gif";
	var nav_project7_over = new Image();
	nav_project7_over.src ="images/nav_project7_over.gif";
	var nav_project8_over = new Image();
	nav_project8_over.src ="images/nav_project8_over.gif";

//----- cores menu ------
	var nav_coreA_over = new Image();
	nav_coreA_over.src ="images/nav_coreA_over.gif";
	var nav_coreB_over = new Image();
	nav_coreB_over.src ="images/nav_coreB_over.gif";
	var nav_coreC_over = new Image();
	nav_coreC_over.src ="images/nav_coreC_over.gif";
	var nav_coreD_over = new Image();
	nav_coreD_over.src ="images/nav_coreD_over.gif";
	var nav_coreE_over = new Image();
	nav_coreE_over.src ="images/nav_coreE_over.gif";
	var nav_coreF_over = new Image();
	nav_coreF_over.src ="images/nav_coreF_over.gif";
	var nav_coreG_over = new Image();
	nav_coreG_over.src ="images/nav_spacer.gif";
	
//----- sites menu ------
	var nav_sites_superfund_over = new Image();
	nav_sites_superfund_over.src ="images/nav_sites_superfund_over.gif";
	var nav_sites_brownfields_over = new Image();
	nav_sites_brownfields_over.src ="images/nav_sites_brownfields_over.gif";
	
//----- news menu ------
	var nav_news_news_over = new Image();
	nav_news_news_over.src ="images/nav_news_news_over.gif";
	var nav_news_events_over = new Image();
	nav_news_events_over.src ="images/nav_news_events_over.gif";

	var spacer1=new Image();
	spacer1.src="images/nav_spacer1.gif";
	var spacer2=new Image();
	spacer2.src="images/nav_spacer2.gif";
	
	nav_browns_program0=new Image();
	nav_browns_program0.src="images/nav_browns0.gif";
	nav_browns_program1=new Image();
	nav_browns_program1.src="images/nav_browns1.gif";

	nav_projects_here0=new Image();
	nav_projects_here0.src="images/nav_projects_here0.gif";
	nav_projects_here1=new Image();
	nav_projects_here1.src="images/nav_projects_here1.gif";

	nav_cores0=new Image();
	nav_cores0.src="images/nav_cores0.gif";
	nav_cores1=new Image();
	nav_cores1.src="images/nav_cores1.gif";
	
	nav_sites0=new Image();
	nav_sites0.src="images/nav_sites0.gif";
	nav_sites1=new Image();
	nav_sites1.src="images/nav_sites1.gif";
	
	nav_news0=new Image();
	nav_news0.src="images/nav_news0.gif";
	nav_news1=new Image();
	nav_news1.src="images/nav_news1.gif";
	
	nav_publications0=new Image();
	nav_publications0.src="images/nav_publications0.gif";
	nav_publications1=new Image();
	nav_publications1.src="images/nav_publications1.gif";
}

function clearmenus(){
	if (currentSection != 'browns_program')
		change('imgmenu0','nav_browns_program',0);
	if (currentSection != 'projects')
		change('imgmenu1','nav_projects_here',0);
	if (currentSection != 'cores')
		change('imgmenu2','nav_cores',0);
	if (currentSection != 'sites')
		change('imgmenu3','nav_sites',0);
	if (currentSection != 'news')
		change('imgmenu4','nav_news',0);
	if (currentSection != 'publications')
		change('imgmenu5','nav_publications',0);
}