if (document.images)
   {
     btn1off= new Image(183,57);
     btn1off.src="graphics/aboutmalove.jpg";
     btn1on= new Image(183,57);
     btn1on.src="graphics/aboutmalove-roll.jpg";  
     
     btn2off= new Image(183,57);
     btn2off.src="graphics/maloveinthenews.jpg";
     btn2on= new Image(183,57);
     btn2on.src="graphics/maloveinthenews-roll.jpg"; 

     btn3off= new Image(183,57);
     btn3off.src="graphics/currentnews.jpg";
     btn3on= new Image(183,57);
     btn3on.src="graphics/currentnews-roll.jpg"; 
     
     btn4off= new Image(183,57);
     btn4off.src="graphics/needtoknow.jpg";
     btn4on= new Image(183,57);
     btn4on.src="graphics/needtoknow-roll.jpg"; 
     
     btn5off= new Image(183,57);
     btn5off.src="graphics/10day.jpg";
     btn5on= new Image(183,57);
     btn5on.src="graphics/10day-roll.jpg"; 
     
     btn6off= new Image(183,57);
     btn6off.src="graphics/meddef.jpg";
     btn6on= new Image(183,57);
     btn6on.src="graphics/meddef-roll.jpg"; 
     
     btn7off= new Image(183,57);
     btn7off.src="graphics/fieldsob.jpg";
     btn7on= new Image(183,57);
     btn7on.src="graphics/fieldsob-roll.jpg"; 
     
     btn8off= new Image(183,57);
     btn8off.src="graphics/recvic.jpg";
     btn8on= new Image(183,57);
     btn8on.src="graphics/recvic-roll.jpg"; 
     
     btn9off= new Image(183,57);
     btn9off.src="graphics/dui-penalties.jpg";
     btn9on= new Image(183,57);
     btn9on.src="graphics/dui-penalties-roll.jpg"; 
   }
   
function highlightButton(s) {
   if ("INPUT"==event.srcElement.tagName)
     event.srcElement.className=s
 	}

function computeIt(form) {

var lbs = form.weight.options[form.weight.selectedIndex].value;
var numLbs = new Number(lbs);

var drinks = form.drinks.options[form.drinks.selectedIndex].value;
var numDrinks = new Number(drinks);

var alco = numDrinks*.045;
var alcohol = new Number(alco);

var hours = form.time.options[form.time.selectedIndex].value;
var numHours = new Number(hours);

var metabol = numHours*.012;
var metabolism = new Number(metabol);

if (form.gender.options[form.gender.selectedIndex].value == "male") {
        gendervalue = ".58";
        } else {
                gendervalue = ".49";
                }
var numSex = new Number(gendervalue);


var weight = numLbs/2.2046;
var lbs = new Number(weight);

var water = lbs*numSex;
var bodywater = new Number(water);

var millwater = bodywater*1000;
var milliliters = new Number(millwater);

var oz = 23.36/milliliters;
var ounces = new Number(oz);

var gram = ounces*.806;
var grams = new Number(gram);

var gramsmill = grams*100;
var bac0 = new Number(gramsmill);

var bac1 = bac0*alcohol;
var bac2 = new Number(bac1);

var bac3 = bac2-metabolism;
if (bac3 < 0) {
        var result = "0.0000";
}
var bac4 = bac3 + "";
var result = bac4.substring(0,6);

form.average.value = result;

}