// JavaScript Document
function trim(strText) { 
	// this will get rid of leading spaces 
	while (strText.substring(0,1) == ' ') 
		strText = strText.substring(1, strText.length);

	// this will get rid of trailing spaces 
	while (strText.substring(strText.length-1,strText.length) == ' ')
		strText = strText.substring(0, strText.length-1);

   return strText;
} 

function isValidEmail(strEmail){
  validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;

   // search email text for regular exp matches
    if (strEmail.search(validRegExp) == -1)	{
      return true;
    } 
    return false;
}

function validateForm(){
	if (trim(document.getElementById("txtItemNumber").value) == "")
		alert ("Please enter an Item Number");
	else if (trim(document.getElementById("txtItemName").value) == "")
		alert ("Please enter the Item Name/Description");
	else if (trim(document.getElementById("txtQuantity").value) == "")
		alert ("Please enter a Quantity");
	else if (trim(document.getElementById("txtName").value) == "")
		alert ("Please enter your Name");
	else if (trim(document.getElementById("txtEmail").value) == "")
		alert ("Please enter your Email Address");
	else if (isValidEmail(document.getElementById("txtEmail").value))
		alert ("Not a valid Email Address.  Please retype you Email Address.");
	else if (trim(document.getElementById("txtPhone").value) == "")
		alert ("Please enter your contact Phone Number");
	else return true;
	
	return false;
}