function isEmail(string){
	
	if (!string){
		return false;
	}
	
	var iChars = "*|,\":<>[]{}`\';()&$#%";
	
	for (var i = 0; i < string.length; i++){
		if (iChars.indexOf(string.charAt(i)) != -1)	{
			return false;
		}
	}
	return true;
}                      
                    
function isReady() {
    if (document.frmContact.txtName.value == ""){
    		alert('Please enter your name');
    		document.frmContact.txtName.focus();
        	return false;
    }
    else if (isEmail(document.frmContact.txtEmail.value) == false){
        	alert("Please enter a valid email address.");
        	document.frmContact.txtEmail.focus();
        	return false;
    }
    else if (document.frmContact.txtMessage.value == ""){
    		alert('Please enter a message');
    		document.frmContact.txtMessage.focus();
        	return false;
    }
    
    return true;
}