<!--

function validate_form ()
{
    var valid;
	if ( document.contact_form.subscr.checked == true )
        {

		if ( document.contact_form.priceL.value == document.contact_form.priceH.value)
		{
			alert ( "The price range is invalid." );
			return false;
		}

		if ( document.contact_form.username.value == "" )
		{
			alert ( "Please enter your name or uncheck the 'Let us share with you' checkbox." );
			return false;
		}
		if ( document.contact_form.userphone.value == "" )
		{
			alert ( "Please enter your phone or uncheck the 'Let us share with you' checkbox." );
			return false;
		}
		if ( document.contact_form.emailaddr.value == "" )
		{
			alert ( "Please enter your email or uncheck the 'Let us share with you' checkbox." );
			return false;
		}
	}
	if ( document.contact_form.subscr.checked == false )
        {

		if ( document.contact_form.username.value !== "" )
		{
			alert ( "Please check the 'Let us share with you' checkbox or remove your name." );
			return false;
		}
		if ( document.contact_form.userphone.value !== "" )
		{
			alert ( "Please check the 'Let us share with you' checkbox or remove your phone." );
			return false;
		}
		if ( document.contact_form.emailaddr.value !== "" )
		{
			alert ( "Please check the 'Let us share with you' checkbox or remove your email address." );
			return false;
		}
	}

    //return valid;
}

//-->