swapInit = function (){
	a = document.getElementsByTagName('img');
	for (i=0;i<a.length;i++){
		img = a[i];
		if (img.className == 'preview'){
			img.onmouseover = function (){
				this.src = 'img/previewOver.gif';
			}
			img.onmouseout = function (){
				this.src = 'img/preview.gif';
			}
		}
		if (img.className == 'add'){
			img.onmouseover = function (){
				this.src = 'img/addOver.gif';
			}
			img.onmouseout = function (){
				this.src = 'img/add.gif';
			}
		}
		if (img.className == 'set'){
			img.onmouseover = function (){
				this.src = 'img/setTuneOver.gif';
			}
			img.onmouseout = function (){
				this.src = 'img/setTune.gif';
			}
		}
	}
}

window.onload = swapInit;