function toggle() {

	var myAs = document.getElementsByTagName('a');
	for(i in myAs){
		if(myAs[i].className == 'toggle') {
			myAs[i].onmouseover = function() {
				var myAsSpan = this.getElementsByTagName('span');
				for(i in myAsSpan){
					myAsSpan[0].style.display = 'block';
				}
			}
			myAs[i].onmouseout = function() {
			var myAsSpan = this.getElementsByTagName('span');
				for(i in myAsSpan){
					myAsSpan[0].style.display = 'none';
				}
			}
		}
	}
}

addToStart(toggle);