function fOnChange(y,m,d,e) {
	if (d!=0) fCreateCookie(_cookieName, y+'-'+m+'-'+d);
}

function fCreateCookie(name,value)
{
	document.cookie = name+"="+value+"; path=/";
}

function fReadCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

var _cookieName="selectedDate";
var _sd=fReadCookie(_cookieName);
if (_sd) {
	_sd=_sd.split("-");
	gdSelect=[_sd[0],_sd[1],_sd[2]];
	gCurMonth[0]=_sd[0];
	gCurMonth[1]=_sd[1];
}

function popup(url,framename) {	
	var w=parent.open(url,framename,"top=200,left=200,width=400,height=200,scrollbars=1,resizable=1");
	if (w&&url.split(":")[0]=="mailto") w.close();
	else if (w&&!framename) w.focus();
}
function getEaster(year) {
	var a=year%19, b=Math.floor(year/100), c=year%100, d=Math.floor(b/4), e=b%4, f=Math.floor((b+8)/25), g=Math.floor((b-f+1)/3), h=(19*a+b-d-g+15)%30, i=Math.floor(c/4), k=c%4, l=(32+2*e+2*i-h-k)%7, m=Math.floor((a+11*h+22*l)/451), n=h+l-7*m+114;
	return [Math.floor(n/31),n%31+1];
}


// ====== Following are self-defined and/or custom-built functions! =======



// ======= the following plugin is coded for the artificial internal dropdown seletors ========
// You may change the left,top in the fPopMenu() to adjust the popup position.
// Other Settings
var _highlite_background="#002C63";	// highlight background color
var _highlite_fontColor="white";	// highlight font color
var _pop_length=7;	// how many months to be shown
var _pop_width=100;	// pixels of the popup width

// Override the gsCalTitle option to popup a date-selector layer. Remember to keep it as an expression or a function returning a string.
gsCalTitle="\"<a class='PopAnchor' href='javascript:void(0);' onclick='if(this.blur)this.blur();fPopMenu(this,event);return false;'>\"+gMonths[gCurMonth[1]-1]+' '+gCurMonth[0]+\"</a>\"";



function fPopMenu(dc,e) {
	var lyr=NN4?document.freeDiv0:fGetById(document,"freeDiv0");
	var bv=NN4?lyr.visibility=="show":lyr.style.visibility=="visible";
	if (bv) { fToggleLayer(0,false); return; }
	fSetDPop(gCurMonth[0],gCurMonth[1]);
	if (NN4) with (lyr) {
		left=12;
		top=4;
	} else with (lyr.style) {
		left=14+"px";
		top=4+"px";
	}
	fToggleLayer(0,true);
}

var _tmid=null;
function fSetDPop(y,m) {
	var mi=_pop_length;
	var wd=_pop_width;
	var sME=NN4||IE4?"":" onmouseover='fToggleColor(this,0)' onmouseout='fToggleColor(this,1)' ";	// menu-item focus background-color
	var padstr="&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
	var cm=fCalibrate(y,m);
	var a=[NN4||IE4||IE&&MAC?"<table border=1 cellspacing=0 cellpadding=0><tr><td>":"","<div onmouseover='clearTimeout(_tmid)' onmouseout='_tmid=setTimeout(\"fToggleLayer(0,false)\",100)'><table class='PopMenu' border=0 cellspacing=0 cellpadding=0>"];
	if(!fBfRange(cm[0],cm[1]))a.push("<tr><td align='center' class='PopMenuItem' nowrap width=",wd,sME," onclick='fSetDPop(",cm[0],",",cm[1]-mi,")'><a class='PopMenuItem' href='javascript:void(0)' onclick='if(NN4)fSetDPop(",cm[0],",",cm[1]-mi,");return false;'>",padstr,"-",padstr,"</a></td></tr>");
	for (var i=0;i<mi;i++) {
		var lm=fCalibrate(cm[0],cm[1]+i);
		if (!fIsOutRange(lm[0],lm[1]))
			a.push("<tr><td align='center' class='PopMenuItem' nowrap width=",wd,sME," onclick='fToggleLayer(0,false);fSetCal(",lm[0],",",lm[1],",0,true,event);'><a class='PopMenuItem' href='javascript:void(0)' onclick='if(NN4)fSetCal(",lm[0],",",lm[1],",0,true,event);return false;'>",gMonths[lm[1]-1]," ",lm[0],"</a></td></tr>");
	}
	if(!fAfRange(lm[0],lm[1]))a.push("<tr><td align='center' class='PopMenuItem' nowrap width=",wd,sME," onclick='fSetDPop(",cm[0],",",cm[1]+mi,")'><a class='PopMenuItem' href='javascript:void(0)' onclick='if(NN4)fSetDPop(",cm[0],",",cm[1]+mi,");return false;'>",padstr,"+",padstr,"</a></td></tr>")
	a.push("</table></div>",NN4||IE4||IE&&MAC?"</td></tr></table>":"");
	fDrawLayer(0,a.join(''));
}

var _cPair=[];
function fToggleColor(obj,n) {
	if (NN4||IE4) return;
	if (n==0) { // mouseover
		_cPair[0]=obj.style.backgroundColor;
		obj.style.backgroundColor=_highlite_background;
		_cPair[1]=obj.firstChild.style.color;
		obj.firstChild.style.color=_highlite_fontColor;
	} else {
		obj.style.backgroundColor=_cPair[0];
		obj.firstChild.style.color=_cPair[1];
	}
}

function fToggleLayer(id,bShow) {
	var lyr=NN4?eval("document.freeDiv"+id):fGetById(document,"freeDiv"+id);
	if (NN4) lyr.visibility=bShow?"show":"hide";
	else lyr.style.visibility=bShow?"visible":"hidden";
}

function fDrawLayer(id,html) {
	var lyr=NN4?eval("document.freeDiv"+id):fGetById(document,"freeDiv"+id);
	if (IE4||IE&&MAC) lyr.style.border="0px";
	if (NN4) with (lyr.document) {
		clear(); open();
		write(html);
		close();
	} else {
		lyr.innerHTML=html+"\n";
	}
}

// ======= end of dropdown plugin ========