function toggle(element){

	var el = document.getElementById(element);
	
	if(el.style.display == 'none'){
		el.style.display = '';
	}else{
		el.style.display = 'none';
	}
}

function switcheroo(element1, element2){

	var el = document.getElementById(element1);
	var el2 = document.getElementById(element2);
	
	if(el.style.display == 'none'){
		el.style.display = '';
		el2.style.display = 'none';
	}else{
		el.style.display = 'none';
		el2.style.display = 'none';
	}
}

function setClassName(objId, className) {
    	document.getElementById(objId).className = className;
}

function getElementsByClassName(oElm, strTagName, strClassName){
	// Written by Jonathan Snook, http://www.snook.ca/jon; 
	// Add-ons by Robert Nyman, http://www.robertnyman.com
	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 newwindow = '';

function popup(url) {
	if (!newwindow.closed && newwindow.location) {
		newwindow.location.href = url;
	}
	else {
		newwindow=window.open(url,'name','height=600,width=800');
		if (!newwindow.opener) newwindow.opener = self;
	}
	if (window.focus) {newwindow.focus()}
	return false;
}