function checkBrochureForm()
{
	var ctitle, cfname, clname, cemail, cphone, cstreet, csuburb, cstate, cpostcode, cfound, cinterest, cmailopt;
	with(window.document.brochureform)
	{
		ctitle    = title;
		cfname    = fname;
		clname    = lname;
		cemail   = email;
		cphone    = phone;
		cstreet    = street;
		csuburb = suburb;
		cstate = state;
		cpostcode = postcode;
		cfound = found;
		cinterest = interest;
		cmailopt = mailopt;


	}
	
	if(trim(ctitle.value) == '')
	{
		alert('Please select your title');
		ctitle.focus();
		return false;
	}
	else if(trim(cfname.value) == '')
	{
		alert('Please enter your first name');
		cfname.focus();
		return false;
	}
	else if(trim(clname.value) == '')
	{
		alert('Please enter your last name');
		clname.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(cphone.value) == '')
	{
		alert('Please enter your phone number');
		cphone.focus();
		return false;
	}	
	else if(trim(cstreet.value) == '')
	{
		alert('Please enter your street address');
		cstreet.focus();
		return false;
	}		
	else if(trim(csuburb.value) == '')
	{
		alert('Please enter your suburb');
		csuburb.focus();
		return false;
	}
	else if(trim(cstate.value) == '')
	{
		alert('Please enter your state');
		cstate.focus();
		return false;
	}
	else if(trim(cpostcode.value) == '')
	{
		alert('Please enter your postcode');
		cpostcode.focus();
		return false;
	}
	else if(trim(cfound.value) == '')
	{
		alert('Please select where you heard about us');
		cfound.focus();
		return false;
	}
	else if(trim(cinterest.value) == '')
	{
		alert('Please let us know what products you are interested in');
		cfound.focus();
		return false;
	}
	else if(trim(cmailopt.value) == '')
	{
		alert('Please select your preferred mailing option');
		cmailopt.focus();
		return false;
	}
	else
	{
		ctitle.value    = trim(ctitle.value);
		cfname.value    = trim(cfname.value);
		clname.value    = trim(clname.value);
		cemail.value   = trim(cemail.value);
		cphone.value   = trim(cphone.value);
		cstreet.value   = trim(cstreet.value);
		csuburb.value = trim(csuburb.value);
		cstate.value = trim(cstate.value);
		cpostcode.value = trim(cpostcode.value);
		cfound.value = trim(cfound.value);
		cinterest.value = trim(cinterest.value);
		cmailopt.value = trim(cmailopt.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);
}