function getURLParam(strParamName)
{
	var strReturn = "";
	var strHref = window.location.href;
	if (strHref.indexOf("?") > -1)
	{
		var strQueryString = strHref.substr(strHref.indexOf("?")).toLowerCase();
		var aQueryString = strQueryString.split("&");
		for (var iParam = 0; iParam < aQueryString.length; iParam++)
		{
			if (aQueryString[iParam].indexOf(strParamName.toLowerCase() + "=") > -1 )
			{
				var aParam = aQueryString[iParam].split("=");
				strReturn = aParam[1];
				break;
			}
		}
	}
	return unescape(strReturn);
}

function validateForm()
{
	var isFormValid =new Boolean();
	isFormValid = true;
	var errors = "";
	
	var cname, cemail, cnumber, csubject, cdescription;
	with(window.document.contactForm)
	{
		cname = name;
		cemail = email;
		cnumber = number;
		csubject = subject;
		cdescription = description
	}

	if(trim(cname.value) == '')
	{
		cname.style.background = 'Yellow';
		errors += 'Please enter your name\n';
		cname.focus();
		isFormValid = false;
	}
	else if(cname.value.length > 50)
	{
		cname.style.background = 'Yellow';
		errors += 'Name exceeds max length of 50 characters\n';
		cname.focus();
		isFormValid = false;
	}
	else
	{
		cname.style.background = 'White';	
	}
	
	if(trim(cemail.value) == '')
	{
		cemail.style.background = 'Yellow';
		errors += 'Please enter your email\n';
		cemail.focus();
		isFormValid = false;
	}
	else if(cemail.value.length > 100)
	{
		cemail.style.background = 'Yellow';
		errors += 'Email address exceeds max length of 100 characters\n';
		cemail.focus();
		isFormValid = false;
	}
	else if(!isEmail(trim(cemail.value)))
	{
		cemail.style.background = 'Yellow';
		errors += 'Email address contains illegal characters\n';
		cemail.focus();
		isFormValid = false;
	}
	else
	{
		cemail.style.background = 'White';	
	}
	
	if(trim(cnumber.value) == '')
	{
		cnumber.style.background = 'Yellow';
		errors += 'Please enter your telephone number\n';
		cnumber.focus();
		isFormValid = false;
	}
	else if(cnumber.value.length > 20)
	{
		cnumber.style.background = 'Yellow';
		errors += 'Telephone number exceeds max length of 20 characters\n';
		cnumber.focus();
		isFormValid = false;
	}
	else if(!isPhone(trim(cnumber.value)))
	{
		cnumber.style.background = 'Yellow';
		errors += 'Telephone number contains illegal characters\n';
		cnumber.focus();
		isFormValid = false;
	}
	else
	{
		cnumber.style.background = 'White';	
	}
	
	if(trim(csubject.value) == '')
	{
		csubject.style.background = 'Yellow';
		errors += 'Please enter title\n';
		csubject.focus();
		isFormValid = false;
	}
	else if(csubject.value.length > 100)
	{
		csubject.style.background = 'Yellow';
		errors += 'Title exceeds max length of 100 characters\n';
		csubject.focus();
		isFormValid = false;
	}
	else
	{
		csubject.style.background = 'White';	
	}
	
	if(trim(cdescription.value) == '')
	{
		cdescription.style.background = 'Yellow';
		errors += 'Please enter a description\n';
		cdescription.focus();
		isFormValid = false;
	}
	else if(cdescription.value.length > 1500)
	{
		cdescription.style.background = 'Yellow';
		errors += 'Description exceeds max length of 1500 characters\n';
		cdescription.focus();
		isFormValid = false;
	}
	else
	{
		cdescription.style.background = 'White';
	}
	
	if(isFormValid)
	{
		cname.value = trim(cname.value);
		cemail.value = trim(cemail.value);
		cnumber.value = trim(cnumber.value);
		csubject.value = trim(csubject.value);
		cdescription.value = trim(cdescription.value);
		return true;
	}
	else
	{
		alert(errors);
		return false;
	}
}

function trim(str)
{
	return str.replace(/^\s+|\s+$/g,'');
}

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);
}

function isPhone(str)
{
	var regex = /^[\+\-\(\)0-9]+$/i;
	return regex.test(str);
}

function resetForm()
{
	var cname, cemail, cnumber, csubject, cdescription;
	with(window.document.contactForm)
	{
		name.value = "";
		name.style.background = 'White';
		email.value = "";
		email.style.background = 'White';
		number.value = "";
		number.style.background = 'White';
		subject.value = "";
		subject.style.background = 'White';
		description.value = "";
		description.style.background = 'White';
	}
}