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unction Num_Week()
{
fecha = new Date();
f2 = new Date(fecha.getFullYear(),fecha.getMonth(),fecha.getDate(),0,0);
f1 = new Date(fecha.getFullYear(),0,1,0,0);
day = f1.getDay();
if(day == 0)
day = 7;
if(day <5)
{
FW = parseInt(((Math.round(((f2-f1)/1000/60/60/24))+(day-1))/7) + 1);
if(FW == 53 || FW == 0)
FW = 1;
}
else
{
FW = parseInt(((Math.round(((f2-f1)/1000/60/60/24))+(day-1))/7));
if(FW == 0)
FW = 52;
if(FW == 53)
FW = 1;
}
return(FW);
}