var theImages = new Array()
var theNames = new Array()
var txtvalidate;

theImages[0] = 'random_images/1.gif'
theImages[1] = 'random_images/2.gif'
theImages[2] = 'random_images/3.gif'
theImages[3] = 'random_images/4.gif'
theImages[4] = 'random_images/5.gif'
theImages[5] = 'random_images/6.gif'
theImages[6] = 'random_images/7.gif'
theImages[7] = 'random_images/8.gif'
theImages[8] = 'random_images/9.gif'
theImages[9] = 'random_images/10.gif'
theImages[10] = 'random_images/11.gif'
theImages[11] = 'random_images/12.gif'
theImages[12] = 'random_images/13.gif'
theImages[13] = 'random_images/14.gif'
theImages[14] = 'random_images/15.gif'
theImages[15] = 'random_images/16.gif'
theImages[16] = 'random_images/17.gif'
theImages[17] = 'random_images/18.gif'
theImages[18] = 'random_images/19.gif'
theImages[19] = 'random_images/20.gif'

theNames[0] = 'e3sv'
theNames[1] = 'j7rf'
theNames[2] = '4lf6'
theNames[3] = 'n5uh'
theNames[4] = 'b6pd'
theNames[5] = 'd8tas'
theNames[6] = 'gh67f'
theNames[7] = 'l8v3'
theNames[8] = 'F9ku'
theNames[9] = '12lk'
theNames[10] = 'm3ua'
theNames[11] = '85r5'
theNames[12] = '6cjyb'
theNames[13] = 'h5fup'
theNames[14] = 'aktw6'
theNames[15] = 'g3v1a'
theNames[16] = 'sf67b'
theNames[17] = 'lw4ch'
theNames[18] = '5jpqx'
theNames[19] = 'z1ad'

var j = 0
var p = theImages.length;
var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theImages[i]
}
var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
document.write('<img src="'+theImages[whichImage]+'">');
}

function GetVerify(GetTxtValue)
{
 if(GetTxtValue == theNames[whichImage])
 {
 	return true;
 } 
 else
 {
 return false;
 }
}