var testresults
function checkemail(sp){
var str=document.validation.emailcheck.value
var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
if (filter.test(str))
testresults=true
else{
alert(sp)
testresults=false
}
return (testresults)
}

function checkmailaddress(sp){
if (document.layers||document.getElementById||document.all)
return checkemail(sp)
else
return true
}