function checkForm()
{
	var ccompany, caddress, czip, ccity, ccountry, cinfoabout, cname, cfirstname, cfunction, ctel, cemail, creachus, cspecify, ccomment;
	with(window.document.msgform)
	{
		ccompany = company
		caddress = address
		czip = zip
		ccity = city
		ccountry = country
		cinfoabout = infoabout
		cname = name
		cfirstname = firstName 
		cfunctiontitle = functionTitle	
		ctel = tel
		cemail = email
		creachus = reachUs
		cspecify =specify
		ccomment = comment 
	}
	
	if(trim(ccompany.value) == '')
	{
		alert('Please enter your company name');
		ccompany.focus();
		return false;
	}
	if(trim(caddress.value) == '')
	{
		alert('Please enter your address');
		caddress.focus();
		return false;
	}
	if(trim(czip.value) == '')
	{
		alert('Please enter your zip code');
		czip.focus();
		return false;
	}
	if(trim(ccity.value) == '')
	{
		alert('Please enter your city');
		ccity.focus();
		return false;
	}
	if(trim(ccountry.value) == '--- Select Country Here ---')
	{
		alert('Please select your country');
		ccountry.focus();
		return false;
	}
	if(trim(cinfoabout.value) == '--- Select Subject Here ---')
	{
		alert('Please select your subject');
		cinfoabout.focus();
		return false;
	}
	if(trim(ctel.value) == '')
	{
		alert('Please enter your telephone number');
		ctel.focus();
		return false;
	}
	if(trim(cname.value) == '')
	{
		alert('Please enter your name');
		cname.focus();
		return false;
	}
	if(trim(cfirstname.value) == '')
	{
		alert('Please enter your first name');
		cfirstname.focus();
		return false;
	}
	else if(trim(cemail.value) == '')
	{
		alert('Please enter your email');
		cemail.focus();
		return false;
	}
	else if(!isEmail(trim(cemail.value)))
	{
		alert('Email address is not valid');
		cemail.focus();
		return false;
	}
	else if(trim(creachus.value) == '--- Select Item Here ---')
	{
		alert('Please specify how you reached us');
		creachus.focus();
		return false;
	}
	if(trim(cspecify.value) == '')
	{
		alert('Please specify how you reached us');
		cspecify.focus();
		return false;
	}

	else
	{
		ccompany.value = trim(ccompany.value);
		caddress.value = trim(caddress.value);
		czip.value = trim(czip.value);
		ccity.value = trim(ccity.value);
		ccountry.value = trim(ccountry.value);
		cinfoabout.value = trim(cinfoabout.value);
		cname.value = trim(cname.value);
		cfirstname.value = trim(cfirstname.value);
		cfunctiontitle.value = trim(cfunctiontitle.value);
		ctel.value = trim(ctel.value);
		cemail.value = trim(cemail.value);
		creachus.value = trim(creachus.value);
		cspecify.value = trim(cspecify.value);
		ccomment.value = trim(ccomment.value);

		return true;
	}
}

/*
Strip whitespace from the beginning and end of a string
Input : a string
*/
function trim(str)
{
	return str.replace(/^\s+|\s+$/g,'');
}

/*
Check if a string is in valid email format. 
Returns true if valid, false otherwise.
*/
function isEmail(str)
{
	var regex = /^[-_.a-z0-9]+@(([-_a-z0-9]+\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i;
	return regex.test(str);
}