function rollover() {
if (!document.getElementById) return
var imgOrSrc;
var imgPreload = new Array();
var images = document.getElementsByTagName('img');
for (var i = 0; i < images.length; i++) {
if (images[i].getAttribute('rsrc')) {
imgPreload[i] = new Image();
imgPreload[i].src = images[i].getAttribute('rsrc');
images[i].onmouseover = function() {
imgOrSrc = this.getAttribute('src');
this.setAttribute('src',this.getAttribute('rsrc'))
}
images[i].onmouseout = function() {
this.setAttribute('src',imgOrSrc)
}
}
}
}
function setupObs() {
//Park City
var site = 0;
var now = new Date();
var obs = new observatory(atlas[site],2000,1,1,12,0,0);
obs.name=atlas[site].name;
var lat=parsecol(atlas[site].latitude);
obs.latitude = atlas[site].ns?-lat:lat;
var lon=parsecol(atlas[site].longitude);
obs.longitude = atlas[site].we?-lon:lon;
obs.year=now.getFullYear();
obs.month=now.getUTCMonth()+1;
obs.day=now.getUTCDate();
obs.hours=now.getUTCHours();
obs.minutes=now.getMinutes();
obs.seconds=now.getSeconds();
obs.tz = atlas[site].zone;
var dst=checkdst(obs,site);
obs.tz=obs.tz+dst;
obs.hours-=obs.tz/60.0;
if (obs.hours >=24) {
obs.hours-=24; obs.day+=1;
if (obs.day > month_length[obs.month-1]) {
obs.day-=month_length[obs.month-1];
obs.month+=1;
if (obs.month==13) {
obs.year+=1; obs.month=1;
}
}
} else if (obs.hours < 0) {
obs.hours+=24; obs.day-=1;
if (obs.day <= 0) {
obs.month-=1;
if (obs.month==0) {
obs.year-=1; obs.month=12;
}
obs.day=month_length[obs.month-1];
}
}
return obs;
}
function getMoonPhase() {
//observer=setupObs();
var moontab=MoonPos(observer);
return moontab;
}
function printCurrentObs(target) {
//observer=setupObs();
if (target==99) {
var twilight=new Array(-0.833,-18.0);
var info=sunrise(observer,twilight[0]);
with (this.document) {
writeln("");
writeln("| ");
writeln("Sunrise: | | ");
writeln(""+info[0]);
writeln(" | ");
writeln("");
writeln("Sunset: | | ");
writeln(""+info[1]);
writeln(" |
");
}
var info=sunrise(observer,twilight[1]);
with (this.document) {
writeln("| ");
writeln("Astronomical Twilight Begins: | ");
writeln(" | "+info[0]);
writeln(" | ");
writeln("");
writeln("Astronomical Twilight Ends: | ");
writeln(" | "+info[1]);
writeln(" |
");
}
} else {
if (target==98) {
var riseset=moonrise(observer);
if ((riseset[0]<0) && (riseset[1]<0)) {
if (riseset[0]==-1) {
with (this.document) {
writeln("| ");
writeln("Moonrise: ----- | ");
writeln(" | ");
writeln("Moonset: ----- |
");
}
} else {
with (this.document) {
writeln("| ");
writeln("Moonrise: +++++ | ");
writeln(" | ");
writeln("Moonset: ++++ |
");
}
}
} else {
if (riseset[0] < 0) {
with (this.document) {
writeln("");
writeln("Moonrise: | | ");
writeln(" | ");
}
} else {
with (this.document) {
writeln("");
writeln("Moonrise: | | ");
writeln("");
writeln(hmstring(riseset[0])+" | ");
}
}
if (riseset[1] < 0) {
with (this.document) {
writeln("");
writeln("Moonset: | | ");
writeln(" ");
writeln(" | ");
}
} else {
with (this.document) {
writeln("");
writeln("Moonset: | | ");
writeln("");
writeln(hmstring(riseset[1])+" | ");
}
}
}
} else {
var info=doPlanet(observer,target);
with (this.document) {
writeln(" |
");
writeln("");
writeln("");
writeln("Conditions for
");
writeln(observer.month+"/"+observer.day+"/"+observer.year+" ");
writeln(timestring(observer,false)+" |
");
writeln("| ");
writeln("Rising: | ");
writeln(" | ");
writeln("");
writeln(info[0]+" |
");
writeln("| ");
writeln("Transiting: | ");
writeln(" | ");
writeln("");
writeln(info[1]+" |
");
writeln("| ");
writeln("Setting: | ");
writeln(" | ");
writeln("");
writeln(info[2]+" |
");
writeln("| ");
writeln("Visual Magnitude: | ");
writeln(" | ");
writeln("");
writeln(info[6]+" |
");
writeln("| ");
writeln("Visual Diameter: | ");
writeln(" | ");
writeln("");
writeln(info[5]+"\" |
");
writeln("| ");
writeln("Distance from Earth: | ");
writeln(" | ");
writeln("");
writeln(info[4]+" AU |
");
}
}
}
}