function rand(number) {
    return parseInt(Math.random()*number);
};

myNum=(rand(4)); 


document.write('<div class="ceowen-sub-imagebox">');
if(myNum == 0) {
document.write('<img src="/ad/channel/ceowen-01.gif" style="height:100px;width:714px;" />');
}
else if(myNum ==1){	
document.write('<img src="/ad/channel/ceowen-02.gif" style="height:100px;width:714px;" />');
}
else if(myNum ==2){	
document.write('<img src="/ad/channel/ceowen-03.gif" style="height:100px;width:714px;" />');
}
else if(myNum ==3){	
document.write('<img src="/ad/channel/ceowen-04.gif" style="height:100px;width:714px;" />');
}
else if(myNum ==4){	
document.write('<img src="/ad/channel/ceowen-05.gif" style="height:100px;width:714px;" />');
}

else {
document.write('<img src="/ad/channel/ceowen-01.gif" style="height:100px;width:714px;" />');
}

document.write('</div>');