function validateContactForm(form){
	var alertMsg = "Please enter data for the following missing fields:\n\n"
	//alert("hello");
	if(form.txtFirstName.value==""){
		alertMsg = alertMsg + "  First Name: \n"
	}
	if(form.txtLastName.value==""){
		alertMsg = alertMsg + "  Last Name: \n"
	}	
	if(form.txtComments.value==""){
		alertMsg = alertMsg + "  Message: \n"
	}
	//validate email address
	var emailID=form.txtEmail
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email Address")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	
	if (alertMsg == "Please enter data for the following missing fields:\n\n"){
		return true;
	} 	
	else {
		alert(alertMsg);
		return false;
	}
}

function validateIPodForm(form){
	var alertMsg = "Please enter data for the following missing fields:\n\n"
	//alert("hello");
	if(form.txtFirstName.value==""){
		alertMsg = alertMsg + "  First Name: \n"
	}
	if(form.txtLastName.value==""){
		alertMsg = alertMsg + "  Last Name: \n"
	}	
	if(form.txtCompanyName.value==""){
		alertMsg = alertMsg + "  Company Name: \n"
	}
	
	if(form.txtAddress1.value==""){
		alertMsg = alertMsg + "  Address: \n"
	}
	
	if(form.txtCity.value==""){
		alertMsg = alertMsg + "  City: \n"
	}
	
	//alert(form.drpStateList.value);
	if(form.drpStateList.value=="Select One..."){
		alertMsg = alertMsg + "  State: \n"
	}
	
	if(form.txtZip.value==""){
		alertMsg = alertMsg + "  Zip Code: \n"
	}
	
	if(form.txtPhone.value==""){
		alertMsg = alertMsg + "  Phone Number: \n"
	}
	
	if((form.rdlInvolved[0].checked==false) && (form.rdlInvolved[1].checked==false)){
		alertMsg = alertMsg + "  Are you involved in the decision making process? \n"
	}
	
	if((form.rdlAttending[0].checked==false) && (form.rdlAttending[1].checked==false)){
		alertMsg = alertMsg + "  Will you be attending IMTS 2006 in Chicago? \n"
	}		
	
	if((form.chkRules.checked==false)){
		alertMsg = alertMsg + "  Please indicate the you have read the official rules. \n"
	}
			
	//validate email address
	var emailID=form.txtEmail
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email Address")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	
	if (alertMsg == "Please enter data for the following missing fields:\n\n"){
		return true;
	} 	
	else {
		alert(alertMsg);
		return false;
	}
}

function resetForm(){
	document.contact.reset();
}

//validate email address.

function echeck(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
		alert("Invalid E-mail Address")
		return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		alert("Invalid E-mail Address")
		return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert("Invalid E-mail Address")
		return false
	}

		if (str.indexOf(at,(lat+1))!=-1){
		alert("Invalid E-mail Address")
		return false
		}

		if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert("Invalid E-mail Address")
		return false
		}

		if (str.indexOf(dot,(lat+2))==-1){
		alert("Invalid E-mail Address")
		return false
		}
	
		if (str.indexOf(" ")!=-1){
		alert("Invalid E-mail Address")
		return false
		}

 		return true					
}