function isEmail(val) {
		
		return (val.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1);
		
	}
	
	function isPhoneNumber(val) {
		
		var exp = /\(?\d{3}\)?[-.]?\d{3}[-.]?\d{4}/;
		if (val.match(exp)) return true;
		else return false;
		
	}
	
	function isNotEmpty(val) {
		
		if (val.length < 4) return false;
		else return true;
		
	}
	
	function checkContact(form) {
		
		var exp = new RegExp("^z3LL$", "i");
		
		if (!isNotEmpty(form.cName.value)) {
			
			document.getElementById('error_name').style.display = '';
			form.cName.focus();
			return false;
			
		} else if (!isEmail(form.cEmail.value))	{
			
			document.getElementById('error_name').style.display = 'none';
			document.getElementById('error_email').style.display = '';
			form.cEmail.focus();
			return false;
			
		} else if (!form.cCode.value.match(exp)) {
			form.cCode.focus();
			document.getElementById('error_name').style.display = 'none';
			document.getElementById('error_email').style.display = 'none';			
			document.getElementById('error_code').style.display = '';
			return false;			
			
		} else {
			
			return true;
			
		}
		
	}
	
	function checkForm(form) {
		
		var exp = new RegExp("^z3LL$", "i");
		
		if (!isNotEmpty(form.cName.value)) {
			
			alert("Check Name.");
			form.cName.focus();
			return false;
			
		} else if (!isPhoneNumber(form.cDayPhone.value) && !isPhoneNumber(form.cEveningPhone.value)) {

			alert("Please enter either a daytime or evening phone number in the format ###-###-####");
			form.cDayPhone.focus();
			return false;					
			
		} else if (!isPhoneNumber(form.cDayPhone.value) && !isPhoneNumber(form.cEveningPhone.value)
				&& !isEmail(form.cEmail.value))	{
					
			alert("At least one phone number or email must be filled");
			form.cEmail.focus();
			return false;		
			
		} else if (!form.cCode.value.match(exp)) {
			alert("Wrong verification code. Please try again");
			form.cCode.focus();
			return false;			
			
		} else {
			
			return true;
			
		}		
		
	}
	
	function toggleDisplayHide(divname)
	{
		var dv = document.getElementById(divname);				
		if (dv.style.display == "") {
			dv.style.display = "none";
		} else {
			dv.style.display = "";
		}
	}	
	
	function OpenWin(url, height, width) {
		var popWin = window.open(url,"","height=" + height + ",width=" + width + ",scrollbars=yes,resizable=no,statusbar=yes,menubar=no,toolbar=no") 	
	}