if(document.images){
	P_sml0_on= new Image();
	P_sml0_on.src ="images/amo_on.gif";
	P_sml0_off= new Image();
	P_sml0_off.src ="images/amo_off.gif";

	P_sml1_on= new Image();
	P_sml1_on.src ="images/apo_on.gif";
	P_sml1_off= new Image();
	P_sml1_off.src ="images/apo_off.gif";

	P_sml2_on= new Image();
	P_sml2_on.src ="images/cdc_on.gif";
	P_sml2_off= new Image();
	P_sml2_off.src ="images/cdc_off.gif";

	P_sml3_on= new Image();
	P_sml3_on.src ="images/cte_on.gif";
	P_sml3_off= new Image();
	P_sml3_off.src ="images/cte_off.gif";

	P_sml4_on= new Image();
	P_sml4_on.src ="images/prj_on.gif";
	P_sml4_off= new Image();
	P_sml4_off.src ="images/prj_off.gif";

 }