var mess = new Array(
'<table border="0" width="700" cellspacing="0" cellpadding="0"><tr><td width="100%"><img border="0" src="images/head_1.jpg" width="700" height="148"></td></tr></table>',
'<table border="0" width="700" cellspacing="0" cellpadding="0"><tr><td width="100%"><img border="0" src="images/head_2.jpg" width="700" height="148"></td></tr></table>',
'<table border="0" width="700" cellspacing="0" cellpadding="0"><tr><td width="100%"><img border="0" src="images/head_3.jpg" width="700" height="148"></td></tr></table>',
'<table border="0" width="700" cellspacing="0" cellpadding="0"><tr><td width="100%"><img border="0" src="images/head_4.jpg" width="700" height="148"></td></tr></table>',
'<table border="0" width="700" cellspacing="0" cellpadding="0"><tr><td width="100%"><img border="0" src="images/head_5.jpg" width="700" height="148"></td></tr></table>',
'<table border="0" width="700" cellspacing="0" cellpadding="0"><tr><td width="100%"><img border="0" src="images/head_6.jpg" width="700" height="148"></td></tr></table>',
'<table border="0" width="700" cellspacing="0" cellpadding="0"><tr><td width="100%"><img border="0" src="images/head_7.jpg" width="700" height="148"></td></tr></table>');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);