function swapMainImage(sHTML) {
	var lPos = sHTML.indexOf('src="');
	var sLeft = sHTML.substr(lPos+5);

	var rPos = sLeft.indexOf('"');
	var sLeft = sLeft.substring(0,rPos);

	var sNewFilename = sLeft.replace('-small', '');
	document.getElementById("mainImage").innerHTML = '<img src="' + sNewFilename + '"/>';
}