var ver4 = (navigator.appVersion.charAt(0) >= "4");

var NN4  = ver4 && (navigator.appName == "Netscape");

var IE4 = ver4 && (navigator.appName.charAt(0) == "M");

var NN3 = ((navigator.appVersion.charAt(0) == "3") && (navigator.appName == "Netscape"));



if(NN3 || NN4 || IE4){

var imgIcon = new Array();

imgIcon[0] = new Image(15,15);  imgIcon[0].src = "img/arrow.gif";

imgIcon[1] = new Image(15,15);  imgIcon[1].src = "img/arrow2.gif";

imgIcon[2] = new Image(50,40);  imgIcon[2].src = "img/read.gif";

imgIcon[3] = new Image(50,40);  imgIcon[3].src = "img/read1.gif";

imgIcon[4] = new Image(50,40);  imgIcon[4].src = "img/read2.gif";

imgIcon[5] = new Image(50,40);  imgIcon[5].src = "img/read3.gif";

imgIcon[6] = new Image(50,40);  imgIcon[6].src = "img/read4.gif";

imgIcon[7] = new Image(50,40);  imgIcon[7].src = "img/read5.gif";

imgIcon[8] = new Image(50,40);  imgIcon[8].src = "img/read6.gif";

imgIcon[9] = new Image(50,40);  imgIcon[9].src = "img/read7.gif";

imgIcon[10] = new Image(50,40);  imgIcon[10].src = "img/read8.gif";

}



function IconIn(nam,num) {

if(NN3 || NN4 || IE4) document.images[nam].src = imgIcon[num].src;

}


function IconOut(nam,num) {

if(NN3 || NN4 || IE4) document.images[nam].src = imgIcon[num].src;

}