function headers(){
	get = location.search;
	if(!get){
		section = 'home';	
	}
	else {
		section = getSection(get);
	}
	replaceImage(section);
}

function replaceImage(section){
	var img = document.getElementById("headimg");
	img.style.backgroundImage="url(files/" + section + ".jpg)"
}

function getSection(get){
	var section = 'home';
	get = get.substring(1);
	if(get.search('&') != -1){
		section = 'home';
	}
	else {
		if(get.search('section') != -1) {
			equal = get.search('=');
			section = get.substring(equal+1); 	
		}
	}
	return section;
}