Disable 3 days of popup calendar

JavaScript
1

Hello,

I need to disable the first 3 days of a popup calendar so that users can only select a date which is 3 days in advance to the present dates. I dont really know javascript so i would really appreciate if someone cal help me out in this. Calendar code can be found below.

/* — Swazz Javascript Calendar —
/* — v 1.0 3rd November 2006
By Oliver Bryant
http://calendar.swazz.org */

function getObj(objID)
{
if (document.getElementById) {return document.getElementById(objID);}
else if (document.all) {return document.all[objID];}
else if (document.layers) {return document.layers[objID];}
}

function checkClick(e) {
e?evt=e:evt=event;
CSE=evt.target?evt.target:evt.srcElement;
if (getObj(‘fc’))
if (!isChild(CSE,getObj(‘fc’)))
getObj(‘fc’).style.display=‘none’;
}

function isChild(s,d) {
while(s) {
if (s==d)
return true;
s=s.parentNode;
}
return false;
}

function Left(obj)
{
var curleft = 0;
if (obj.offsetParent)
{
while (obj.offsetParent)
{
curleft += obj.offsetLeft
obj = obj.offsetParent;
}
}
else if (obj.x)
curleft += obj.x;
return curleft;
}

function Top(obj)
{
var curtop = 0;
if (obj.offsetParent)
{
while (obj.offsetParent)
{
curtop += obj.offsetTop
obj = obj.offsetParent;
}
}
else if (obj.y)
curtop += obj.y;
return curtop;
}

document.write(‘<table id=“fc” style=“position:absolute;border-collapse:collapse;background:#FFFFFF;border:1px solid #ABABAB;display:none” cellpadding=2>’);
document.write(‘<tr><td style=“cursor:pointer” onclick=“csubm()”><img src=“…/…/public/front/includes/classes/images/arrowleftmonth.gif”></td><td colspan=5 id=“mns” align=“center” style=“font:bold 13px Verdana”></td><td align=“right” style=“cursor:pointer” onclick=“caddm()”><img src=“…/…/public/front/includes/classes/images/arrowrightmonth.gif”></td></tr>’);
document.write(‘<tr><td align=center style=“background:#ABABAB;font:12px Verdana”>S</td><td align=center style=“background:#ABABAB;font:12px Verdana”>M</td><td align=center style=“background:#ABABAB;font:12px Verdana”>T</td><td align=center style=“background:#ABABAB;font:12px Verdana”>W</td><td align=center style=“background:#ABABAB;font:12px Verdana”>T</td><td align=center style=“background:#ABABAB;font:12px Verdana”>F</td><td align=center style=“background:#ABABAB;font:12px Verdana”>S</td></tr>’);
for(var kk=1;kk<=6;kk++) {
document.write(‘<tr>’);
for(var tt=1;tt<=7;tt++) {
num=7 * (kk-1) - (-tt);
document.write(‘<td id="v’ + num + ‘" style=“width:18px;height:18px”> </td>’);
}
document.write(‘</tr>’);
}
document.write(‘</table>’);

document.all?document.attachEvent(‘onclick’,checkClick):document.addEventListener(‘click’,checkClick,false);

// Calendar script
var now = new Date;
var sccm=now.getMonth();
var sccy=now.getFullYear();
var ccm=now.getMonth();
var ccy=now.getFullYear();

var updobj;
function lcs(ielem) {
updobj=ielem;
getObj(‘fc’).style.left=Left(ielem);
getObj(‘fc’).style.top=Top(ielem)+ielem.offsetHeight;
getObj(‘fc’).style.display=‘’;

// First check date is valid
curdt=ielem.value;
curdtarr=curdt.split('/');
isdt=true;
for(var k=0;k&lt;curdtarr.length;k++) {
	if (isNaN(curdtarr[k]))
		isdt=false;
}
if (isdt&(curdtarr.length==3)) {
	ccm=curdtarr[1]-1;
	ccy=curdtarr[2];
	prepcalendar(curdtarr[0],curdtarr[1]-1,curdtarr[2]);
}

}

function evtTgt(e)
{
var el;
if(e.target)el=e.target;
else if(e.srcElement)el=e.srcElement;
if(el.nodeType==3)el=el.parentNode; // defeat Safari bug
return el;
}
function EvtObj(e){if(!e)e=window.event;return e;}
function cs_over(e) {
evtTgt(EvtObj(e)).style.background=‘#CD2F30’;
}
function cs_out(e) {
evtTgt(EvtObj(e)).style.background=‘#F0F0F0’;
}
function cs_click(e) {
updobj.value=calvalarr[evtTgt(EvtObj(e)).id.substring(1,evtTgt(EvtObj(e)).id.length)];
getObj(‘fc’).style.display=‘none’;

}

var mn=new Array(‘JAN’,‘FEB’,‘MAR’,‘APR’,‘MAY’,‘JUN’,‘JUL’,‘AUG’,‘SEP’,‘OCT’,‘NOV’,‘DEC’);
var mnn=new Array(‘31’,‘28’,‘31’,‘30’,‘31’,‘30’,‘31’,‘31’,‘30’,‘31’,‘30’,‘31’);
var mnl=new Array(‘31’,‘29’,‘31’,‘30’,‘31’,‘30’,‘31’,‘31’,‘30’,‘31’,‘30’,‘31’);
var calvalarr=new Array(42);

function f_cps(obj) {
obj.style.background=‘#F0F0F0’;
obj.style.font=‘10px Verdana’;
obj.style.color=‘#333333’;
obj.style.textAlign=‘center’;
obj.style.textDecoration=‘none’;
obj.style.border=‘1px solid #6487AE’;
obj.style.cursor=‘pointer’;
}

function f_cpps(obj) {
obj.style.background=‘#F0F0F0’;
obj.style.font=‘10px Verdana’;
obj.style.color=‘#ABABAB’;
obj.style.textAlign=‘center’;
obj.style.textDecoration=‘line-through’;
obj.style.border=‘1px solid #6487AE’;
obj.style.cursor=‘default’;
}

function f_hds(obj) {
obj.style.background=‘#FFF799’;
obj.style.font=‘bold 10px Verdana’;
obj.style.color=‘#333333’;
obj.style.textAlign=‘center’;
obj.style.border=‘1px solid #6487AE’;
obj.style.cursor=‘pointer’;
}

// day selected
function prepcalendar(hd,cm,cy) {
now=new Date();
sd=now.getDate();
td=new Date();
td.setDate(1);
td.setFullYear(cy);
td.setMonth(cm);
cd=td.getDay();
getObj(‘mns’).innerHTML=mn[cm]+ ’ ’ + cy;
marr=((cy%4)==0)?mnl:mnn;
for(var d=1;d<=42;d++) {
f_cps(getObj(‘v’+parseInt(d)));
if ((d >= (cd -(-1))) && (d<=cd-(-marr[cm]))) {
dip=((d-cd < sd)&&(cm==sccm)&&(cy==sccy));
htd=((hd!=‘’)&&(d-cd==hd));
if (dip)
f_cpps(getObj(‘v’+parseInt(d)));
else if (htd)
f_hds(getObj(‘v’+parseInt(d)));
else
f_cps(getObj(‘v’+parseInt(d)));

		getObj('v'+parseInt(d)).onmouseover=(dip)?null:cs_over;
		getObj('v'+parseInt(d)).onmouseout=(dip)?null:cs_out;
		getObj('v'+parseInt(d)).onclick=(dip)?null:cs_click;
		
		getObj('v'+parseInt(d)).innerHTML=d-cd;	
		calvalarr[d]=''+(d-cd)+'-'+(cm-(-1))+'-'+cy;
	}
	else {
		getObj('v'+d).innerHTML=' ';
		getObj('v'+parseInt(d)).onmouseover=null;
		getObj('v'+parseInt(d)).onmouseout=null;
		getObj('v'+parseInt(d)).style.cursor='default';
		}
}

}

prepcalendar(‘’,ccm,ccy);
//getObj(‘fc’+cc).style.visibility=‘hidden’;

function caddm() {
marr=((ccy%4)==0)?mnl:mnn;

ccm+=1;
if (ccm&gt;=12) {
	ccm=0;
	ccy++;
}
cdayf();
prepcalendar('',ccm,ccy);

}

function csubm() {
marr=((ccy%4)==0)?mnl:mnn;

ccm-=1;
if (ccm&lt;0) {
	ccm=11;
	ccy--;
}
cdayf();
prepcalendar('',ccm,ccy);

}

function cdayf() {
if ((ccy>sccy)|((ccy==sccy)&&(ccm>=sccm)))
return;
else {
ccy=sccy;
ccm=sccm;
cfd=scfd;
}
}

Thank you very much in advance
Sami