var MSIE = 0.0;
var thisMon = -1;

if(navigator && navigator.userAgent){
	var searchMSIE = navigator.userAgent.indexOf('MSIE');
	if(searchMSIE >= 0)
		MSIE = parseFloat(navigator.userAgent.substring(searchMSIE+5,searchMSIE+5+3));
}

function nextImage(cal, startMon, up){
	if(thisMon < 0)thisMon = startMon;
	thisMon += (up?1:11);
	thisMon %= 12;

	var thisMonF = thisMon+1;
	if(thisMonF < 10) thisMonF = '0' + thisMonF;

	// if((MSIE >= 5.0) && document.all['id' + cal].filters.blendTrans.enabled)document.all['id' + cal].filters.blendTrans.Apply();
	document['screenshot' + cal].src=cal + '/' + thisMonF + '.jpg';
	// if((MSIE >= 5.0)  && document.all['id' + cal].filters.blendTrans.enabled)document.all['id' + cal].filters.blendTrans.Play();
	return false;


}