function showMine (stuff) {
	var allMines = document.getElementById('mapInfo').getElementsByTagName('div');
	for (var i=0; i<allMines.length; i++) {
		allMines[i].style.display = 'none';
	}
	var thisMine = document.getElementById(stuff);
	var mineInfo = thisMine.getElementsByTagName('div');
	for (var i=0; i<mineInfo.length; i++) {
		mineInfo[i].style.display = 'block';
	}
	thisMine.style.display = 'block';
}

function getElementsByClassName(oElm, strTagName, strClassName){
var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
	    var arrReturnElements = new Array();
	    strClassName = strClassName.replace(/\-/g, "\\-");
	    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	    var oElement;
	    for(var i=0; i<arrElements.length; i++){
	        oElement = arrElements[i];
	        if(oRegExp.test(oElement.className)){
	            arrReturnElements.push(oElement);
	        }
	    }
	    return (arrReturnElements)
	}
	
var homeImgs = new Array ('/homeimg/home1.jpg', '/homeimg/home2.jpg', '/homeimg/home3.jpg', '/homeimg/home4.jpg');
var imgCount = homeImgs.length;

function chooseImg() {
	if (document.images) {
		var randomNum = Math.floor((Math.random() * imgCount));
		var imgToChange = document.getElementById('homeImg');
		imgToChange.src = homeImgs[randomNum];
	}
}