// JavaScript Document

var roomvalue=1;
var aspectvalue=1;
var winvalue=1.1;
var twentyPercentMore=1.2;
var degreesCDifferential=37;
var BTU2KWH=3.414;
var hmFiddle=0.75;

function precalccheck(form) {
	if (form.roomtype.value==""||form.aspect.value==""||form.length.value==""||form.width.value==""||form.height.value==""){
		alert("\nLength, Width and Height must be Entered. Please check.");
		return false;
	}
	return true;
}

function calcbtu(form) {
	if (precalccheck(form)) {
		var basicHeatReq=(form.length.value*form.width.value*form.height.value)*roomvalue*winvalue*aspectvalue*37*5*.75;
        	form.btuavg.value=Math.round(basicHeatReq*1.2/25)*25;
        	form.btumin.value=Math.round(basicHeatReq/25)*25;
		form.wattsavg.value=Math.round(basicHeatReq*1.2/3.414/25)*25; 
		form.wattsmin.value=Math.round(basicHeatReq/3.414/25)*25;    
	}
	return;
}

var roomheight;
var roomwidth;
var roomlength;
var roomtype;
var aspect;
var doors;
var glazing;
var str_error;

function btu_rate_calculate(){
	roomheight 	= document.form_btu_calc.roomheight.value;
	roomwidth 	= document.form_btu_calc.roomwidth.value;
	roomlength 	= document.form_btu_calc.roomwidth.value;
	roomtype 	= document.form_btu_calc.roomtype.value;
	aspect 		= document.form_btu_calc.roomtype.value;
	doors 		= document.form_btu_calc.roomtype.value;
	glazing 	= document.form_btu_calc.roomtype.value;
}

function post_result(){
}