//preload images for navigation
nav_home_on = new Image();
nav_home_on = '../images/nav_home_on.gif';

nav_company_on = new Image();
nav_company_on = '../images/nav_company_on.gif';

nav_projects_on = new Image();
nav_projects_on = '../images/nav_projects_on.gif';

nav_jobs_on = new Image();
nav_jobs_on = '../images/nav_jobs_on.gif';

nav_customers_on = new Image();
nav_customers_on = '../images/nav_customers_on.gif';

nav_contact_on = new Image();
nav_contact_on = '../images/nav_contact_on.gif';
//stop preloadin' images

function navOn(imName) {
		if (document.images) { 
		document.images[imName].src = '../images/' + imName + "_on.gif"
			 };
}
function navOff(imName) {
		if (document.images) { 
		document.images[imName].src = '../images/' + imName + '.gif' 
		};
}