function validateEmailWithValue(fieldValue,message) {
			   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
			   var address = fieldValue.trim();
			   if(reg.test(address) == false) {
			      return message;
			   }
			   return '';
}
			
function validateRequiredFieldValueWithMessageReturn(fieldValue,message){
			  fieldValue=fieldValue.trim();
				if(fieldValue==''){
					return message;
				}
				return '';
}
function validateRequiredFieldValueForNumbersWithMessageReturn(fieldValue,message1,message2){
	if(fieldValue==''){
		return message1;
	}else if(isNaN(fieldValue) || parseInt(fieldValue,10)<=0){
		return message2;
	}
	return '';
}	
function validateEmail(form_id,email,message) {
			   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
			   var address = document.forms[form_id].elements[email].value.trim();
			   if(reg.test(address) == false) {
			      return message;
			   }
			   return '';
}
			
function validateRequiredFieldWithMessageReturn(myForm,fieldName,message){
 	var fieldValue=myForm.elements[fieldName].value.trim();
	if(fieldValue==''){
		return message;
	}
	return '';
}
function validateRequiredFieldForNumbersWithMessageReturn(myForm,fieldName,message1,message2){
 	var fieldValue=myForm.elements[fieldName].value.trim();
	if(fieldValue==''){
		return message1;
	}else if(isNaN(fieldValue) || parseInt(fieldValue,10)<=0){
		return message2;
	}
	return '';
}