function showCampImage(){

var jArray = new Array();
jArray[0] = "<IMG src='imgs/j_addbonus_main1.jpg' width='570' height='609' border='0'>";
jArray[1] = "<IMG src='imgs/j_addbonus_main2.jpg' width='570' height='609' border='0'>";
var n = Math.ceil(Math.random()*jArray.length) -1 ;
//alert("n=" + n ) ;
document.write(jArray[n]);

}

function showCampImage_e(){

var eArray = new Array();
eArray[0] = "<IMG src='imgs/e_addbonus_main1.jpg' width='570' height='609' border='0'>";
eArray[1] = "<IMG src='imgs/e_addbonus_main2.jpg' width='570' height='609' border='0'>";
var n = Math.ceil(Math.random()*eArray.length) -1 ;
//alert("n=" + n ) ;
document.write(eArray[n]);

}