var ad=new Array()
//insert here your images src
ad[0]='http://www.orioninternational.com/images/register-top.gif';
ad[1]='http://www.orioninternational.com/images/register-top.gif';
ad[2]='http://www.orioninternational.com/images/register-top.gif';

var links=new Array()
//insert here your links
links[0]='http://www.orioninternational.com/register-1.aspx';
links[1]='http://www.orioninternational.com/register-2.aspx';
links[2]='http://www.orioninternational.com/register.aspx';

var xy=Math.floor(Math.random()*ad.length);
document.write('<a href="'+links[xy]+'" onMouseOver="handleOvertop();return true" onMouseOut="handleOuttop();return true" alt="Register" title="Register" onfocus="this.blur();"><img name=imgTop src="'+ad[xy]+'" border="0"></a>');

if (document.images) {
 img_on_top=new Image(); img_on_top.src="/images/register-top-over.gif"; 
 img_off_top=new Image(); img_off_top.src="/images/register-top.gif"; 
}

function handleOvertop() { 
 if (document.images) document.imgTop.src=img_on_top.src;
}
 
 function handleOuttop() {
 if (document.images) document.imgTop.src=img_off_top.src;
}