var USERID="underdown19-20"
if (screen.width>=1024) 
{
var size="resizable=1,location=1,toolbar=1,menubar=1,scrollbars=1,status=1,top=0,left=0,width=900,height=550"
}
else
{
var size="resizable=1,location=1,toolbar=1,menubar=1,scrollbars=1,status=1,top=0,left=0,width=770,height=550"
}
function one_click(ASIN){
var url="http://www.amazon.com/dp/" + ASIN + "/ref=nosim/?tag=" + USERID 
window.open(url,"",size)
return
}