//check if the customers email address is correct
		function isemailAddress(field) {
			if(field.value.indexOf("@") != "-1" && field.value.indexOf(".") != "-1" &&
			   field.value != "")
			   return true;
			   else return false;
		}
			   
		//validate the fields
		function validateForm(form) {
		
		    var firstName = document.getElementById ("firstName");
			var lastName = document.getElementById ("lastName");
			var phoneNumber = document.getElementById ("phoneNumber");
			var emailAddress = document.getElementById ("emailAddress");
			var numval = phoneNumber.value;
			var valid = numval.search(/^\d\d\d-\d\d\d-\d\d\d\d$/);
			var presno = document.getElementById("presno");
			
			var titlePres = document.getElementById ("titlePres");
			var filename = document.getElementById ("filename");
		
		
		
		// First Name
		
			if (firstName.value == "") {
				alert("You did not enter your First Name. Please enter before clicking next. \n");
				firstName.focus();
				return false;
			}
			
		
		// Last Name
			
			if (lastName.value == "") {
			   alert("You did not enter your Last Name. Please enter before clicking next. \n");
			   lastName.focus();
			   return false;
			}
			
			
		// Phone Number
			
			if (phoneNumber.value == "") {
		
				alert("You did not enter your phone number. Please enter before clicking next.\n");
				phoneNumber.focus();
				return false;
			}
		
		
			if (valid != 0) {
		
				alert("The phone number is not in the requested format. Please enter again.\n");
				phoneNumber.select();
				return false;
		
			}
			
			
			
			
		// Email Address	
			
			if(!isemailAddress(form.emailAddress)) {
			   alert("Please enter your correct email address.");
			   form.emailAddress.focus();
			   return false;
			}
			
			if (form.emailAddress.value != form.ConEmail_Address.value){
				alert("In order to continue the email addresses need to match");
				return false;
			
			}
			
			
			// Presentation Number
		
		     if (form.presno.value=='' || form.presno.value==form.presno.defaultValue) {
			 alert("You did not enter a Presentation Number. Please enter before submitting form. \n");
			 form.presno.focus();
			 return false;
		   }
		   
		   
		  // titlePres
		
			if (titlePres.value == "") {
				alert("You did not enter the Title of Presentation. Please enter before submitting form. \n");
				titlePres.focus();
				return false;
				}
				
				
		 // File Attachment
                
				if (filename.value == "") {
				alert("Please upload you Powerpoint Presentation. \n");
				filename.focus();
				return false;
				
			
		   } else {
		   
			return true;
			}
			
		}