// JavaScript Document
String.prototype.Trim = function() { 
	return this.replace(/(^\s*)|(\s*$)/g, ""); 
} 

function checkMail(email) {
	var x = email;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(x)) return true;
	else return false;
}

function checkKeywordSearch(myForm) {
	var keyword = myForm.keyword;
	var sendFlag = true;
	
	if (keyword.value.Trim() == "") {
		alert("Please input keyword");
		sendFlag = false;
		keyword.focus();
	}
	if (sendFlag) {
		myForm.btnSubmit.disabled = "disabled";
	}
	
	return sendFlag;
}

function checkContactUs(myForm) {
	contactPerson = myForm.contactPerson;
	companyName = myForm.companyName;
	email = myForm.email;
	tel = myForm.tel;
	fax = myForm.fax;
	message = myForm.message;
	var sendFlag = true;

	if (contactPerson.value == "" && sendFlag){
		alert("Please input your name");
		sendFlag = false;
		contactPerson.focus();
	}
	
	if (companyName.value == "" && sendFlag){
		alert("Please input your company name");
		sendFlag = false;
		companyName.focus();
	}
		
	if (email.value.Trim() == "" && sendFlag){
		alert("Please enter your email");
		sendFlag = false;
		email.focus();
	} else if (!checkMail(email.value.Trim()) && sendFlag) {
		alert("Invalid email. Please input a correct email");
		sendFlag = false;
		email.focus();
	}
		
	if (tel.value == "" && sendFlag){
		alert("Please input your contact no.");
		sendFlag = false;
		tel.focus();
	}
		
	if (fax.value == "" && sendFlag){
		alert("Please input your fax no.");
		sendFlag = false;
		fax.focus();
	}
		
	if (message.value == "" && sendFlag){
		alert("Please input your message");
		sendFlag = false;
		message.focus();
	}
		
	if (sendFlag) {
		document.getElementById('btnReset').disabled = "disabled";
		document.getElementById('btnSubmit').disabled = "disabled";
	}
	
	return sendFlag;
}