myPix = new Array("certplus/sarin.jpg","certplus/raman.jpg","certplus/hrdmocro.jpg","certplus/edax.jpg")
thisPic = 0
imgCt = myPix.length - 1
function chgSlide(direction) {
	if (document.images) {
	thisPic = thisPic + direction
	if (thisPic > imgCt) {
	thisPic = 0
	}
	if (thisPic < 0) {
	thisPic = imgCt
	}
	document.myPicture.src=myPix[thisPic]
	}
}