function validate_companysearch() {
	if (form_companysearch.name.value == "") {
		alert("Please enter a company to search")
		form_companysearch.name.focus()
		return false;
	}
	else {
		return true;
	}
}

function validate_companyedit() {
	if (form_companyedit.name.value == "") {
		alert("Please enter a company to add/edit")
		form_companyedit.name.focus()
		return false;
	}
	else {
		return true;
	}
}

function validate_productlist() {
	if (form_productlist.products.value == "") {
		alert("Please select a product to search")
		return false;
	}
	else {
		return true;
	}
}

function isValid(pattern, str) {
		return pattern.test(str);
	}

function Validate()
 {	
 	var emailexp = /^[a-z][a-z_0-9\.]+@[a-z_0-9\.]+\.[a-z]{3}$/i;
		
		
	if (document.readerService.txtEmail.value !== '')
		{ 
		if (!isValid(emailexp,document.readerService.txtEmail.value)) 
		{
			alert('Please enter a valid email address.');
			document.readerService.txtEmail.focus();
			return false;
		}
 		}
 return true;
 
 }