function pokaz_koszty(pokaz) { 

strefa_1=new Array("eko1_50","eko1_100","eko1_350","eko1_500","eko1_1000","eko1_2000","eko1_3000","eko1_4000","eko1_5000","eko1_6000","eko1_7000","eko1_8000","eko1_9000","eko1_10000","eko1_11000","eko1_12000","eko1_13000","eko1_14000","eko1_15000","eko1_16000","eko1_17000","eko1_18000","eko1_19000","eko1_20000");
strefa_2=new Array("eko2_50","eko2_100","eko2_350","eko2_500","eko2_1000","eko2_2000","eko2_3000","eko2_4000","eko2_5000","eko2_6000","eko2_7000","eko2_8000","eko2_9000","eko2_10000","eko2_11000","eko2_12000","eko2_13000","eko2_14000","eko2_15000","eko2_16000","eko2_17000","eko2_18000","eko2_19000","eko2_20000");
strefa_3=new Array("eko3_50","eko3_100","eko3_350","eko3_500","eko3_1000","eko3_2000","eko3_3000","eko3_4000","eko3_5000","eko3_6000","eko3_7000","eko3_8000","eko3_9000","eko3_10000","eko3_11000","eko3_12000","eko3_13000","eko3_14000","eko3_15000","eko3_16000","eko3_17000","eko3_18000","eko3_19000","eko3_20000");
strefa_4=new Array("eko4_50","eko4_100","eko4_350","eko4_500","eko4_1000","eko4_2000","eko4_3000","eko4_4000","eko4_5000","eko4_6000","eko4_7000","eko4_8000","eko4_9000","eko4_10000","eko4_11000","eko4_12000","eko4_13000","eko4_14000","eko4_15000","eko4_16000","eko4_17000","eko4_18000","eko4_19000","eko4_20000");

for (i=0;i<24;i++){document.getElementById(strefa_1[i]).style.visibility = "hidden";}
for (i=0;i<24;i++){document.getElementById(strefa_2[i]).style.visibility = "hidden";}
for (i=0;i<24;i++){document.getElementById(strefa_3[i]).style.visibility = "hidden";}
for (i=0;i<24;i++){document.getElementById(strefa_4[i]).style.visibility = "hidden";}

	document.getElementById(pokaz).style.visibility = "visible";

	document.getElementById("wybierz_wage1").style.visibility = "hidden"; document.getElementById("wybierz_wage2").style.visibility = "hidden";
}



function pokaz_wagi(pokaz) { 

wagi=new Array("wagi1","wagi2","wagi3","wagi4");

for (i=0;i<4;i++){document.getElementById(wagi[i]).style.visibility = "hidden";}

document.getElementById(pokaz).style.visibility = "visible"; document.getElementById("wybierz_wage1").style.visibility = "visible"; document.getElementById("wybierz_wage2").style.visibility = "visible"; document.getElementById("wybierz_kraj1").style.visibility = "hidden"; document.getElementById("wybierz_kraj2").style.visibility = "hidden";


var strefa_1=new Array("eko1_50","eko1_100","eko1_350","eko1_500","eko1_1000","eko1_2000","eko1_3000","eko1_4000","eko1_5000","eko1_6000","eko1_7000","eko1_8000","eko1_9000","eko1_10000","eko1_11000","eko1_12000","eko1_13000","eko1_14000","eko1_15000","eko1_16000","eko1_17000","eko1_18000","eko1_19000","eko1_20000");
var strefa_2=new Array("eko2_50","eko2_100","eko2_350","eko2_500","eko2_1000","eko2_2000","eko2_3000","eko2_4000","eko2_5000","eko2_6000","eko2_7000","eko2_8000","eko2_9000","eko2_10000","eko2_11000","eko2_12000","eko2_13000","eko2_14000","eko2_15000","eko2_16000","eko2_17000","eko2_18000","eko2_19000","eko2_20000");
var strefa_3=new Array("eko3_50","eko3_100","eko3_350","eko3_500","eko3_1000","eko3_2000","eko3_3000","eko3_4000","eko3_5000","eko3_6000","eko3_7000","eko3_8000","eko3_9000","eko3_10000","eko3_11000","eko3_12000","eko3_13000","eko3_14000","eko3_15000","eko3_16000","eko3_17000","eko3_18000","eko3_19000","eko3_20000");
var strefa_4=new Array("eko4_50","eko4_100","eko4_350","eko4_500","eko4_1000","eko4_2000","eko4_3000","eko4_4000","eko4_5000","eko4_6000","eko4_7000","eko4_8000","eko4_9000","eko4_10000","eko4_11000","eko4_12000","eko4_13000","eko4_14000","eko4_15000","eko4_16000","eko4_17000","eko4_18000","eko4_19000","eko4_20000");

for (i=0;i<24;i++){document.getElementById(strefa_1[i]).style.visibility = "hidden";}
for (i=0;i<24;i++){document.getElementById(strefa_2[i]).style.visibility = "hidden";}
for (i=0;i<24;i++){document.getElementById(strefa_3[i]).style.visibility = "hidden";}
for (i=0;i<24;i++){document.getElementById(strefa_4[i]).style.visibility = "hidden";}

}