function div_resize(){
	if(document.body.clientWidth>="1024"){
		document.getElementById("content_and_banner").style.left="50%";
		document.getElementById("content_and_banner").style.marginLeft="-512px";
	}
	if(document.body.clientWidth<="1024"){
		document.getElementById("content_and_banner").style.left="0px";
		document.getElementById("content_and_banner").style.marginLeft="0px";
	}
}
function active_link(element){
	document.getElementById(element).style.color="blue";
	document.getElementById(element).style.textDecoration="underline";
}
function inactive_link(element){
	document.getElementById(element).style.color="black";
	document.getElementById(element).style.textDecoration="none";
}