.negative:before{
	content:'(';
}
.negative:after{
	content:')';
}

.unit{
	text-transform:none !important;
}

.dollars:before{
	content:'$';
}
.ip .emissions_per_year:after{
	content:'lb CO\2082/year';
}
.si .emissions_per_year:after{
	content:'kg CO\2082/year';
}
	
.ip .unit_nominal_sizing:after{
	content:'tons';
}
.si .unit_nominal_sizing:after{
	content:'kW';
}
/********************** UNITS ****************************************************************************/

.unit.percent:after{
	content:"\0025"
}
.ip .unit.heat_energy:after{
	content: "kBtu";
}
.ip .unit.capacity:after{
	content: "kBtuh";
}
.si .unit.heat_energy:after{
	content: "J";
}
.ip .unit.liquid_volume:after{
	content: "gal";
}
.si .unit.liquid_volume:after{
	content: "L";
}
.ip .unit.pressure:after{
	content: "psi";
}
.si .unit.pressure:after{
	content: "kPa";
}
.ip .unit.power:after,
.ip .unit.heat_rate:after{
	content: "kBtu/hr";
}
.si .unit.power:after,
.si .unit.heat_rate:after,
.unit.dmd:after{
	content: "kW";
}

.ip .unit.tc:after{
	content: "Btu/hr ft \00b0 F";
}
.si .unit.tc:after{
	content: "W/m K";
}

.ip .unit.thermal_resistance:after{
	content: "hr ft \00b0 F/Btu";
}
.si .unit.thermal_resistance:after{
	content: "m K/W";
}

.ip .unit.thermal_diffusivity:after{
	content: "ft\00b2  / day";
}
.si .unit.thermal_diffusivity:after{
	content: "m\00b2  /day";
}


.ip .unit.temperature:after{
	content: "\00b0 F";
}
.si .unit.temperature:after{
	content: "\00b0 C";
}

.ip .unit.hwg_rate:after{
	content: "Gal/Hr";
}
.si .unit.hwg_rate:after{
	content: "L/Hr";
}

.ip .unit.liquid_flow:after{
	content: "gpm";
}
.si .unit.liquid_flow:after{
	content: "L/s";
}

.ip .unit.air_flow:after{
	content: "cfm";
}
.si .unit.airflow:after{
	content: "L/s";
}

.ip .unit.velocity:after{
	content: "ft/s";
}
.si .unit.velocity:after{
	content: "m/s";
}

.ip .unit.length:after{
	content: "ft";
}
.si .unit.length:after{
	content: "m";
}

.ip .unit.diameter:after{
	content: "in";
}
.si .unit.diameter:after{
	content: "cm";
}

.ip .unit.headloss:after{
	content: "ft H\2082O";
}
.si .unit.headloss:after{
	content: "mm Hg";
}

.unit.time_hr:after{
	content: "hr";
}

.unit.time_min:after{
	content: "min";
}
.unit.time_sec:after{
	content: "s";
}
.unit.days_week:after{
	content: "days/week";
}

/********************** RATES ****************************************************************************/
.unit.rate_electric:after{
	content: "per kWh";
}

.ip .unit.rate_natural_gas:after{
	content: "per ccf";
}
.si .unit.rate_natural_gas:after{
	content: "per m\00b3";
}

.ip .unit.rate_propane:after,.ip .unit.rate_fuel_oil:after{
	content: "per gal";
}
.si .unit.rate_propane:after, .si .unit.rate_fuel_oil:after{
	content: "per L";
}

/*inline equations: a + b = c */
.inline_eq_multiply:after{
	content:" \00b7 ";
}
.inline_eq_answer:before{
	content:" = ";
}
	
/*vertical equations: like elementary school flashcards*/

.vert_eq_equal{
	display:block;
	padding-top:0.3em;
	border-top:solid #333 1px;
}

.vert_eq_sum label:before{
	content:"+ ";
}

.vert_eq_minus label:before{
	content:"- ";
}