//on contact form submit
function contactFormSubmit(elemForm)
{
	var msgArr=[];
	if(!elemForm.name.value) msgArr.push('Name must not be blank!');
	if(!elemForm.email.value) msgArr.push('Email must not be blank!');

	if(msgArr.length>0)
	{
		var str='';
		for(var i=0,n=msgArr.length;i<n;i++)
		{
			if(i>0) str+='\n';
			str+=msgArr[i];
		};
		alert(str);
	};

	return msgArr.length==0;
};