Vedi lo Script  <!-- Script by renatoweb.it --> <style type="text/css"><script language="JavaScript" type="text/javascript"> // degrees, mins, secs to decimal degrees function dms_to_d(d,m,s,dir) { //alert( "d:"+d+" m:"+m+" s:"+s ); d = d-0; m = m-0; var sign = ( dir=='W' || dir=='S' ) ? -1 : 1; return (((s/60+m)/60)+d)*sign; } function d_to_dms(d,x) { var a = new Array(); if(x=='Lt') { a['dir'] = (d>=0)?'N':'S'; } else if(x=='Lg') { a['dir'] = (d>=0)?'E':'W'; } if(d<0) { d=Math.abs(d); } var n = d+''; var tmp = n.split("."); if(tmp[0]=='') { tmp[0]='0' } a['d'] = tmp[0]; // n n = parseFloat("."+tmp[1])*60+''; // min dec tmp = n.split("."); a['m'] = tmp[0]; // min n = parseFloat("."+tmp[1])*60+''; // sec dec tmp = n.split("."); a['s'] = tmp[0]; // sec return a; } function convertAll(direction) { convertLatLong(direction,"Lt"); convertLatLong(direction,"Lg"); } function convertLatLong(direction,L) { var f = document.lat_long_form; if(direction=='<<') { var d = f.elements['d'+L].value; var m = f.elements['m'+L].value; var s = f.elements['s'+L].value; var tmp = f.elements['dir'+L].options; var dir = tmp[tmp.selectedIndex].value; var ans = rnd(dms_to_d(d,m,s,dir),4); f.elements['dec'+L].value = ans; } else { var dec = f.elements['dec'+L].value; var a = d_to_dms(dec,L); f.elements['d'+L].value = isNaN(a['d'])?'0':a['d']; f.elements['m'+L].value = isNaN(a['m'])?'0':a['m']; f.elements['s'+L].value = isNaN(a['s'])?'0':a['s']; if(a['dir']) { setSelectedValue(f.elements['dir'+L],a['dir']); } } return; } function rnd(v, p) { if(rnd.arguments.length==1) { p=0; } v = v * Math.pow(10,p); v = Math.round(v); v = v / Math.pow(10,p); return v; } function setSelectedValue (select,val) { for (var i = 0; i < select.options.length; i++) { if (select.options[i].value==val) { select.options.selectedIndex=i; break; } } } </script>

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