integer i = 0;

default
{
    state_entry()
    {
        llSay(0, "Hello, Avatar!");
    }

    touch_start(integer total_number)
    {
        if (i==0)
        { llParticleSystem([PSYS_PART_FLAGS, 
		PSYS_PART_WIND_MASK | PSYS_PART_EMISSIVE_MASK,
		PSYS_SRC_PATTERN, PSYS_SRC_PATTERN_EXPLODE,
		PSYS_PART_START_COLOR, <1,0,0>]); i=1; }
        else
        { llParticleSystem([]); i=0;}
    }
}