// JavaScript Document
	var letter=new Array();
	letter[0]="a";
	letter[1]="b";
	letter[2]="c";  
	letter[3]="d"; 
	letter[4]="e";
	letter[5]="f";  
	letter[6]="g";  
	letter[7]="h";  
	letter[8]="i";  
	letter[9]="j";  
	letter[10]="k";  
	letter[11]="l";  
	letter[12]="m";  
	letter[13]="n";  
	letter[14]="o";  
	letter[15]="p";  
	letter[16]="q";  
	letter[17]="r";  
	letter[18]="s";  
	letter[19]="t"; 
	letter[20]="u"; 
	letter[21]="v";
	letter[22]="w";  
	letter[23]="x";  
	letter[24]="y";  
	letter[25]="z";  
	var rand1=Math.floor(Math.random()*26);
	var rand2=Math.floor(Math.random()*26);
	var rand3=Math.floor(Math.random()*26);
	var rand4=Math.floor(Math.random()*26); 
	    
document.write('<img  id="image1" name="image1"/>');
document.write('<img  id="image2" name="image2"/>');
document.write('<img  id="image3" name="image3"/>');
document.write('<img  id="image4" name="image4"/>');
document.write('<input name="gen_code" type="hidden" id="gen_code" value="" />');

document.user.image1.src="../letter/"+letter[rand1]+".jpg";
document.user.image2.src="../letter/"+letter[rand2]+".jpg";
document.user.image3.src="../letter/"+letter[rand3]+".jpg";
document.user.image4.src="../letter/"+letter[rand4]+".jpg";
document.user.gen_code.value=letter[rand1]+letter[rand2]+letter[rand3]+letter[rand4];
//document.write(letter[rand1]+letter[rand2]+letter[rand3]+letter[rand4]);