var tagNum;
function init(){
	var tag = document.getElementById("tag" + tagNum);	
	tag.className = "preLoc";
}
function overTag(num){
	document.getElementById("tag" + num).className = "navBg";
}
function outTag(num){
	if(num == tagNum)
		return;
	document.getElementById("tag" + num).className = "";
}