function copyright_open(e){
	var cr=document.getElementById("copyright")
	document.getElementById("copyright").style.display="block";
	cr.style.left=e.clientX+document.documentElement.scrollLeft-420+"px";
	cr.style.top=e.clientY+document.documentElement.scrollTop-60+"px";
}
function copyright_close(e){
	document.getElementById("copyright").style.display="none"
}
function nav_over(navNumber){
	document.getElementById("nav"+navNumber).style.backgroundImage="url(images/nav2.gif)";
}
function nav_out(navNumber){
	document.getElementById("nav"+navNumber).style.backgroundImage="url(images/nav.gif)";
}