_navigation=new Array(
'/assets/navigation/links/mainnav.home.1.jpg',
'/assets/navigation/links/mainnav.about.1.jpg',
'/assets/navigation/links/mainnav.services.1.jpg',
'/assets/navigation/links/mainnav.projects.1.jpg',
'/assets/navigation/links/mainnav.sustainability.1.jpg',
'/assets/navigation/links/mainnav.contact.1.jpg'
);

function preLoad( arr ){
	imageObj = new Image();
    for(i=0; i<arr.length; i++){
    	imageObj.src=arr[i];
	}
}
function doHovr(obj, status){
	splscr=obj.src.split('.');
	splscr[splscr.length-2]=status;
	obj.src=splscr.join('.');
}