list times=[1,2,3,4,5];
float st;float wt;
integer i;
integer timeduration;
integer dialogOpen;
integer glistener;
integer time_pulse_on = FALSE;

integer sw(float st,float wt)
{
    return llGetTime() - st >= wt;
}

default
{
    state_entry()
    {
            wt=(float)llList2Float(times,i);
        llSetTimerEvent(1);
            timeduration = 0;
            dialogOpen = FALSE;
    }

    timer()
    {
        if(!sw(st,wt)) return;

        //llOwnerSay("i = "+(string)i);
        timeduration += i;

        if(timeduration % 60 == 0 )
        {
            // 60s passed - main trigger
            if (dialogOpen) { llListenRemove(glistener); dialogOpen = FALSE; }
        }
        else if (time_pulse_on)
        {
            if(timeduration % 30 == 0 )
            {
                // 30s passed
            }
            else if(timeduration % 15 == 0 )
            {
                // 15s passed
            }
            else if(timeduration % 10 == 0 )
            {
                // 10s passed
            }
            else if(timeduration % 5 == 0 )
            {
                // 5s passed
            }
            else if(timeduration % 3 == 0 )
            {
                // 3s passed
            }
            else if(timeduration % 2 == 0 )
            {
                // 2s passed
            }
                    else if(timeduration % 1 == 0 )
            {
                // 1s passed
            }
        }

        wt=(float)llList2Float(times,i);
        st=llGetTime();
        if(i == llGetListLength(times)-1) i=0; else i++;
    }
}