HTML - calendario dinamico en HTML

Hola buenas, espero que me podais ayudar. Estoy programando en sql server y necesito hacer un calendario dinamico, para ello he ido a la pagina dynamicdrive.com, el codigo del calendario que me he cogido es el siguiente:

<script language="JavaScript">

/*
Dynamic Calendar II (By Jason Moon at http://www.jasonmoon.net)
Permission granted to Dynamicdrive.com to include script in archive
For this and 100's more DHTML scripts, visit http://dynamicdrive.com
*/

var ns6=document.getElementById&&!document.all
var ie4=document.all

var Selected_Month;
var Selected_Year;
var Current_Date = new Date();
var Current_Month = Current_Date.getMonth();

var Days_in_Month = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var Month_Label = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');

var Current_Year = Current_Date.getYear();
if (Current_Year < 1000)
Current_Year+=1900

var Today = Current_Date.getDate();

function Header(Year, Month) {

if (Month == 1) {
Days_in_Month[1] = ((Year % 400 == 0) || ((Year % 4 == 0) && (Year % 100 !=0))) ? 29 : 28;
}
var Header_String = Month_Label[Month] + ' ' + Year;
return Header_String;
}


function Make_Calendar(Year, Month) {
var First_Date = new Date(Year, Month, 1);
var Heading = Header(Year, Month);
var First_Day = First_Date.getDay() + 1;
if (((Days_in_Month[Month] == 31) && (First_Day >= 6)) ||
((Days_in_Month[Month] == 30) && (First_Day == 7))) {
var Rows = 6;
}
else if ((Days_in_Month[Month] == 28) && (First_Day == 1)) {
var Rows = 4;
}
else {
var Rows = 5;
}

var HTML_String = '<table><tr><td valign="top"><table BORDER=4 CELLSPACING=1 cellpadding=2 FRAME="box" BGCOLOR="C0C0C0" BORDERCOLORLIGHT="808080">';

HTML_String += '<tr><th colspan=7 BGCOLOR="FFFFFF" BORDERCOLOR="000000">' + Heading + '</font></th></tr>';

HTML_String += '<tr><th ALIGN="CENTER" BGCOLOR="FFFFFF" BORDERCOLOR="000000">Sun</th><th ALIGN="CENTER" BGCOLOR="FFFFFF" BORDERCOLOR="000000">Mon</th><th ALIGN="CENTER" BGCOLOR="FFFFFF" BORDERCOLOR="000000">Tue</th><th ALIGN="CENTER" BGCOLOR="FFFFFF" BORDERCOLOR="000000">Wed</th>';

HTML_String += '<th ALIGN="CENTER" BGCOLOR="FFFFFF" BORDERCOLOR="000000">Thu</th><th ALIGN="CENTER" BGCOLOR="FFFFFF" BORDERCOLOR="000000">Fri</th><th ALIGN="CENTER" BGCOLOR="FFFFFF" BORDERCOLOR="000000">Sat</th></tr>';

var Day_Counter = 1;
var Loop_Counter = 1;
for (var j = 1; j <= Rows; j++) {
HTML_String += '<tr ALIGN="left" VALIGN="top">';
for (var i = 1; i < 8; i++) {
if ((Loop_Counter >= First_Day) && (Day_Counter <= Days_in_Month[Month])) {
if ((Day_Counter == Today) && (Year == Current_Year) && (Month == Current_Month)) {
HTML_String += '<td BGCOLOR="FFFFFF" BORDERCOLOR="000000"><strong><font color="red">' + Day_Counter + '</font></strong></td>';
}
else {
HTML_String += '<td BGCOLOR="FFFFFF" BORDERCOLOR="000000">' + Day_Counter + '</td>';
}
Day_Counter++;
}
else {
HTML_String += '<td BORDERCOLOR="C0C0C0"> </td>';
}
Loop_Counter++;
}
HTML_String += '</tr>';
}
HTML_String += '</table></td></tr></table>';
cross_el=ns6? document.getElementById("Calendar") : document.all.Calendar
cross_el.innerHTML = HTML_String;
}

function Check_Nums() {
if ((event.keyCode < 48) || (event.keyCode > 57)) {
return false;
}
}


function On_Year() {
var Year = document.when.year.value;
if (Year.length == 4) {
Selected_Month = document.when.month.selectedIndex;
Selected_Year = Year;
Make_Calendar(Selected_Year, Selected_Month);
}
}

function On_Month() {
var Year = document.when.year.value;
if (Year.length == 4) {
Selected_Month = document.when.month.selectedIndex;
Selected_Year = Year;
Make_Calendar(Selected_Year, Selected_Month);
}
else {
alert('Please enter a valid year.');
document.when.year.focus();
}
}

function Defaults() {
if (!ie4&&!ns6)
return
var Mid_Screen = Math.round(document.body.clientWidth / 2);
document.when.month.selectedIndex = Current_Month;
document.when.year.value = Current_Year;
Selected_Month = Current_Month;
Selected_Year = Current_Year;
Make_Calendar(Current_Year, Current_Month);
}

function Skip(Direction) {
if (Direction == '+') {
if (Selected_Month == 11) {
Selected_Month = 0;
Selected_Year++;
}
else {
Selected_Month++;
}
}
else {
if (Selected_Month == 0) {
Selected_Month = 11;
Selected_Year--;
}
else {
Selected_Month--;
}
}
Make_Calendar(Selected_Year, Selected_Month);
document.when.month.selectedIndex = Selected_Month;
document.when.year.value = Selected_Year;
}

</script>

<div id=NavBar style="position:relative;width:286px;top:5px;" align="left">
<form name="when"><table>
<tr>
<td><input type="button" value="<-- Last" onClick="Skip('-')"></td>
<td> </td>
<td><select name="month" onChange="On_Month()">

<script language="JavaScript1.2">
if (ie4||ns6){
for (j=0;j<Month_Label.length;j++) {
document.writeln('<option value=' + j + '>' + Month_Label[j]);
}
}
</script>


</select>
</td>
<td><input type="text" name="year" size=4 maxlength=4 onKeyPress="return Check_Nums()" onKeyUp="On_Year()"></td>
<td> </td>
<td><input type="button" value="Next -->" onClick="Skip('+')"></td>
</tr></table></form></div>
<div id=Calendar style="position:relative;width:238px;top:-2px;" align="left"></div>

este seria mi scripts, ahora bien mi pregunta es la siguiente, ha decir verdad no me entero muxo de este codigo y quisierqa q me exarais una mano en entenderlo, y por otra parte quisiera que me dejara meter entradas en los diferentes dias, muxas graciasssssssss.

Saludos,

Conviene diferenciar, aclarar, en qué lado se ejecuta el calendario. Si lo hacemos en el cliente, los datos serán volátiles, es decir, se guardarán temporalmente ayudados por cookies, o simplemente hasta el cierre de la página. Este sistema tiene bastantes limitaciones.

Si lo procesamos en el servidor, los datos pueden permanecer indefinidamente. En éste caso, los scripts son escritos para CGI, Perl, etc.

Tú decides. Infórmate bien del asunto. Hay muchos script gratuitos.

Suerte.

No pues ni hablar el calendario esta super solo que he intentado alinearlo a la izquierda de mi pag. y aun no lo logro si me podes ayudar en eso te lo agradesco de todas formas salu.....