//EGS 09-12 nov 2007
var gCurSel = ""; //Global: current selection
var gTarget = ""; //Global: target field
Date.prototype.getWeek = function(){ //Extend Date with week-function
var Jan01 = new Date(this.getFullYear(), 0, 1);
return Math.ceil((((this - Jan01) / 86400000) + Jan01.getDay()) / 7);
}
Date.prototype.compare = function(Value){ //Extend Date with comparing
if(this.getFullYear() == Value.getFullYear() && this.getMonth() == Value.getMonth() && this.getDate() == Value.getDate())
return true;
else
return false;
}
function calendar(pTarget){ //Constructor
try{
var Id = "cal" + pTarget.id;
if(!document.getElementById(Id) && gTarget == ""){ //Allow one instance per target and one instance in general
gTarget = pTarget;
var Pos = getPos(pTarget);
var Cal = document.createElement("div");
gCurSel = pTarget.value != "" ? parseDate(pTarget.value) : new Date(); //Selected date
gCurSel = new Date(gCurSel.getFullYear(), gCurSel.getMonth(), gCurSel.getDate()); //Recreate without time
var Month = gCurSel.getMonth() + 1;
Month = Month < 10 ? "0" + Month : Month;
Cal.id = Id;
Cal.style.width = "160px";
Cal.style.height = "130px";
Cal.style.position = "absolute";
Cal.style.left = Pos.Left + "px";
Cal.style.top = (Pos.Top + Pos.Height + 1) + "px";
Cal.style.border = "solid 1px";
Cal.style.backgroundColor = "#FFFFFF";
Cal.style.textAlign = "center";
Cal.style.fontFamily = "Courier";
Cal.style.fontSize = "12";
var Body = "";
Body += "";
Body += "";
Body += " | ";
Body += " <";
Body += " " + gCurSel.getFullYear() + "";
Body += " >";
Body += " <";
Body += " " + Month + "";
Body += " >";
Body += " X";
Body += " | ";
Body += "
";
Body += " ";
Body += " ";
Body += " ";
Body += " ";
Body += " ";
Body += " ";
Body += " ";
Body += " ";
Body += " ";
Body += "
";
for(var i = 0; i < 6; i++){
Body += " ";
Body += " ";
for(var j = 0; j < 7; j++){
Body += " | . | ";
}
Body += "
";
}
Body += "
";
Cal.innerHTML = Body;
document.body.appendChild(Cal);
setCalendar(Id, gCurSel);
}
} catch(e) {}
}
function setClose(pId, pValue){ //Close calendar
Obj = document.getElementById(pId);
if(typeof pValue != "undefined"){ //Set selected value
gTarget.value = pValue;
}
document.body.removeChild(Obj);
gCurSel = "";
gTarget = "";
}
function getPos(pObj){ //Get absolute position of object
var Pos = new position();
Pos.Width = pObj.clientWidth;
Pos.Height = pObj.clientHeight;
Pos.Left = pObj.offsetLeft;
Pos.Top = pObj.offsetTop;
Parent = pObj;
while(Parent.offsetParent != null){
Parent = Parent.offsetParent;
Pos.Left += Parent.offsetLeft;
Pos.Top += Parent.offsetTop;
}
return Pos;
}
function position(){ //Position constructor
this.Left = 0;
this.Top = 0;
this.Width = 0;
this.Height = 0;
}
function parseDate(Value){ //Custom date formatting-parsing
var Parts = Value.split(/\W+/);
if(Parts[0] && Parts[1] && Parts[2])
return new Date(Parts[0], Parts[1]-1, Parts[2], 0, 0, 0);
else
return new Date();
}
function addMonth(pId, pNr){ //Add month(s) to target
var ObjYear = document.getElementById(pId + "Year");
var ObjMonth = document.getElementById(pId + "Month");
var AddYears = pNr > 0 ? Math.floor(pNr / 12) : Math.ceil(pNr / 12);
var AddMonths = pNr - AddYears*12;
var Year = parseInt(ObjYear.innerHTML) + AddYears;
var Month = parseInt(ObjMonth.innerHTML) + AddMonths;
if(Month < 1){
Month = 12;
Year -= 1;
}
else if(Month > 12){
Month = 1;
Year += 1;
}
Month = Month < 10 ? "0" + Month : Month;
ObjYear.innerHTML = Year;
ObjMonth.innerHTML = Month;
setCalendar(pId, new Date(Year, Month - 1, 1));
}
function setCalendar(pId, pDate){ //Write calendar month including date
try{
var PrevLast = new Date(pDate.getFullYear(), pDate.getMonth(), 0); //Last day of previous month
var First = new Date(pDate.getFullYear(), pDate.getMonth(), 1); //First day of month
var Last = new Date(pDate.getFullYear(), pDate.getMonth() + 1, 0); //Last day of month
//Week numbers
var Week = First.getWeek();
for(var i = 0; i < 6; i++){
var Obj = document.getElementById(pId + "Week" + i);
Obj.childNodes[0].data = Week + i;
}
//Days
var Offset = First.getDay();
Offset = Offset == 0 ? Offset = 6 : Offset - 1; //0-6 starting monday
dp = PrevLast.getDate();
df = First.getDate();
dl = Last.getDate();
var Day = 0;
for(var i = 0; i < 42; i++){ //7 x 6
var Obj = document.getElementById(pId + "Day" + i);
var Year = pDate.getFullYear();
var Month = pDate.getMonth() + 1;
if(i < Offset){ //Before shown month
Month -= 1;
Day = dp - Offset + i + 1;
Obj.className = "calother";
}
else if(i - Offset > dl - 1){ //After shown month
Month += 1;
Day = i - dl - Offset + 1;
Obj.className = "calother";
}
else{ //Shown month
Day = i - Offset + 1;
Obj.className = gCurSel.compare(new Date(Year, Month-1, Day)) ? "calselected" : "calmonth";
}
//Correct month and year
if(Month < 1){
Month = 12;
Year -= 1;
}
else if(Month > 12){
Month = 1;
Year += 1;
}
DatStr = Year + "-" + (Month < 10 ? "0" + Month : Month) + "-" + (Day < 10 ? "0" + Day : Day); //Format
Obj.innerHTML = "" + Day + "";
}
} catch(e) {}
}