function buildCal(m, y, cM, cH, cDW, cD, brdr){
var mn=['Enero','Febrero','Marzo','Abril','Mayo','Junio','Julio','Agosto','Septiembre','Octubre','Noviembre','Diciembre'];
var dim=[31,0,31,30,31,30,31,31,30,31,30,31];

var oD = new Date(y, m-1, 1); //DD replaced line to fix date bug when current day is 31st
//oD.od=oD.getDay()+1; //DD replaced line to fix date bug when current day is 31st
oD.od=oD.getDay(); //DD replaced line to fix date bug when current day is 31st

var todaydate=new Date() //DD added
var scanfortoday=(y==todaydate.getFullYear() && m==todaydate.getMonth()+1)? todaydate.getDate() : 0 //DD added

dim[1]=(((oD.getFullYear()%100!=0)&&(oD.getFullYear()%4==0))||(oD.getFullYear()%400==0))?29:28;
var t='<table WIDTH=150 cols="7" cellpadding="0" border="'+brdr+'" cellspacing="0"><tr align="center">';
t+='<td colspan="7" align="center" BGCOLOR=#fafafa><b>'+mn[m-1]+' - '+y+'</td></tr><tr align="center">';
for(s=0;s<7;s++)t+='<td BGCOLOR=#fafafa ><B>'+"LMMJVSD".substr(s,1)+'</td>';
t+='</tr><tr align="center">';
for(i=1;i<=42;i++){
var x=((i-oD.od>=0)&&(i-oD.od<dim[m-1]))? i-oD.od+1 : '&nbsp;';
if (x==scanfortoday) //DD added
x='<FONT COLOR=BROWN><B>'+x+'</span>' //DD added
t+='<td class="'+cD+'">'+x+'</td>';
if(((i)%7==0)&&(i<36))t+='</tr><tr align="center">';
}
return t+='</tr></table></div>';
}


var todaydate=new Date()
var curmonth=todaydate.getMonth()+1 //get current month (1-12)
var curyear=todaydate.getFullYear() //get current year
document.write(buildCal(curmonth ,curyear, "main", "month", "daysofweek", "days", 1));