if (document.images) {

box = new Image
box.src="images/box.gif"
box1 = new Image
box1.src="images/box2.gif"

}


function validEmail(email) {
			invalidChars = " /:,;"
	
			if (email == "") {
				return false
			}
			for (i=0; i<invalidChars.length; i++) {
				badChar = invalidChars.charAt(i)
				if (email.indexOf(badChar,0) > -1) {
					return false
				}
			}
			atPos = email.indexOf("@",1)
			if (atPos == -1) {
				return false
			}
			if (email.indexOf("@",atPos+1) > -1) {
				return false
			}
			periodPos = email.indexOf(".",atPos)
			if (periodPos == -1) {
				return false
			}
			if (periodPos+3 > email.length)	{
				return false
			}
			return true
		}

		function submitIt(artForm) {
			if (!validEmail(artForm.emailAddr.value)) {
				alert("Please enter a valid email address")
				artForm.emailAddr.focus()
				artForm.emailAddr.select()
				return false
			}
	
			return true
		}

//displays a sequence of images on the homepage

	adImages = new Array("images/animation1.jpg","images/animation2.jpg","images/animation3.jpg")
	thisAd = 0
	imgCt = adImages.length

	function rotate() {
		if (document.images) {
			if (document.adBanner.complete) {
				thisAd++
				if (thisAd == imgCt) {
					thisAd = 0
				}
				document.adBanner.src=adImages[thisAd]
			}
		  	setTimeout("rotate()", 4 * 1000)
		}
	}