// IMAGE ROLLOVERS
var myImg = new Array();

function preLoad() {
	if (document.images) {
		for (b = 0; b <= 60; b++) {
		myImg[b] = new Image(); myImg[b].src = "images/b" + b + ".gif";
		}
	}
}

function imgRoll(name,imgId) {
	document.images[name].src = myImg[imgId].src;
}

function imgRoll1(imgId) { document.catalystImg.src = "images/" + imgId; }
function imgRoll2(imgId) { document.roastedImg.src = "images/" + imgId; }
function imgRoll3(imgId) { document.ferovanImg.src = "images/" + imgId; }
function imgRoll4(imgId) { document.fenimoImg.src = "images/" + imgId; }
function imgRoll5(imgId) { document.calciumImg.src = "images/" + imgId; }
function imgRoll6(imgId) { document.titaniumImg.src = "images/" + imgId; }
function imgRoll7(imgId) { document.vanchemImg.src = "images/" + imgId; }

 
// FORM ERROR CHECKING
function Check_Data() {
	if ((document.myform.First_Name.value == null) || (document.myform.First_Name.value == "")) {
		alert("Please enter your first name");
		document.myform.First_Name.focus();
		return false;
	}  // end if
	else if ((document.myform.Last_Name.value == null) || (document.myform.Last_Name.value == "")) {
		alert("Please enter your last name");
		document.myform.Last_Name.focus();
		return false;
	}  // end else if
	else if ((document.myform.Company.value == null) || (document.myform.Company.value == "")) {
		alert("Please enter your company");
		document.myform.Company.focus();
		return false;
	}  // end else if
	else if ((document.myform.Telephone.value == null) || (document.myform.Telephone.value == "")) {
		alert("Please enter your telephone number");
		document.myform.Telephone.focus();
		return false;
	}  // end else if
	else if ((document.myform.Email_Address.value == null) || (document.myform.Email_Address.value == "")) {
		alert("Please enter your email address");
		document.myform.Email_Address.focus();
		return false;
	}  // end else if
	else {
		return true;	
	}  // end else
} // end Check_Values()


function Check_Catalyst_Data() {
	if ((document.myform.Contact_Name.value == null) || (document.myform.Contact_Name.value == "")) {
		alert("Please enter your contact name");
		document.myform.Contact_Name.focus();
		return false;
	}  // end if
	else if ((document.myform.Telephone.value == null) || (document.myform.Telephone.value == "")) {
		alert("Please enter your telephone number");
		document.myform.Telephone.focus();
		return false;
	}  // end else if
	else if ((document.myform.Email_Address.value == null) || (document.myform.Email_Address.value == "")) {
		alert("Please enter your email address");
		document.myform.Email_Address.focus();
		return false;
	}  // end else if
	else if ((document.myform.Company.value == null) || (document.myform.Company.value == "")) {
		alert("Please enter your company");
		document.myform.Company.focus();
		return false;
	}  // end else if
	else {
		return true;	
	}  // end else
} // end Check_Catalyst_Data()

function Check_Handbook_Data() {
		if ((document.myform.Name.value == null) || (document.myform.Name.value == "")) {
		alert("Please enter your name");
		document.myform.Name.focus();
		return false;
	}  // end if
	else if ((document.myform.Company.value == null) || (document.myform.Company.value == "")) {
		alert("Please enter your company");
		document.myform.Company.focus();
		return false;
	}  // end else if
	else if ((document.myform.Email.value == null) || (document.myform.Email.value == "")) {
		alert("Please enter your email address");
		document.myform.Email.focus();
		return false;
	}  // end else if
	else {
			var myExp=/^[\w|.|-]{1,}@{1}\w{1,}.{1}\w{1}[\w|.|-]{1,}$/;
			str = document.myform.Email.value;
			if (!myExp.test(str)) {
				alert("The format of "+str+" appears to be incorrect.");
				document.myform.Email.focus();
				return false;
			} else {
				return true;	
			}
	}  // end else
} // end Check_Handbook_Data()