function checkIt(evt) {
    evt = (evt) ? evt : window.event
    var charCode = (evt.which) ? evt.which : evt.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57)) {
        status = "This field accepts numbers only."
        return false
    }
    status = ""
    return true
}

function goToFrame(element,nrOfFrame,formelement)
{
    document.getElementById(element).value=nrOfFrame;
    document.getElementById(formelement).submit();
}
function mostrar() 
{ 
test1 = document.getElementById("submenuP").style.visibility="visible"; 
} 
function esconder() 
{ 
test1 = document.getElementById("submenuP").style.visibility="hidden"; 
} 

var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i

function checkmail(e){
var returnval=emailfilter.test(e.value)
if (returnval==false){
alert("email not valid.")
e.select()
}
return returnval
}