function clickButton(e, buttonid)
{ 
      var bt = document.getElementById(buttonid); 
      if (typeof bt == 'object'){ 
            if(navigator.appName.indexOf("Netscape")>(-1)){ 
                  if (e.keyCode == 13){ 
                        bt.click(); 
                        return false; 
                  } 
            } 
            if (navigator.appName.indexOf("Microsoft Internet Explorer")>(-1)){ 
                  if (event.keyCode == 13){ 
                        bt.click(); 
                        return false; 
                  } 
            } 
      }
} 

function isnArray() {
	argnr=isnArray.arguments.length
	for (var i=0;i<argnr;i++) {
	this[i+1] = isnArray.arguments[i];
	}
	}
function isndayArray() {
	argnr=isndayArray.arguments.length
	for (var i=0;i<argnr;i++) {
	this[i+1] = isndayArray.arguments[i];
	}
	} 
function getFullYear(d) {
	var y = d.getYear();
	if (y < 1000) y += 1900;
	return y;
}
function getDay(d) {
var dow = d.getDay();
return dow;	
}
var isnMonths=new isnArray("January","February","March","April","May","June","July","August","September","October","November","December");
var isnDays=new isndayArray("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"); 
today=new Date();
//document.write(isnDays[getDay(today)+1]+" " +isnMonths[today.getMonth()+1]+" "+today.getDate()+", "+" "+getFullYear(today));


function isValidEmail(str) {
var at="@"
var dot="."
var lat=str.indexOf(at)
var lstr=str.length
var ldot=str.indexOf(dot)
if (str.indexOf(at)==-1){
	alert("Either you did not enter an email address or the email address is invalid")
	return false
}

if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	alert("Either you did not enter an email address or the email address is invalid")
	return false
}

if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
	alert("Either you did not enter an email address or the email address is invalid")
	return false
}

	if (str.indexOf(at,(lat+1))!=-1){
	alert("Either you did not enter an email address or the email address is invalid")
	return false
	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	alert("Either you did not enter an email address or the email address is invalid")
	return false
	}

	if (str.indexOf(dot,(lat+2))==-1){
	alert("Either you did not enter an email address or the email address is invalid")
	return false
	}

	if (str.indexOf(" ")!=-1){
	alert("Either you did not enter an email address or the email address is invalid")
	return false
	}

 	return true
}
function makeblank(txt)
{
    if( txt.value=="(Postcode1)" || txt.value=="(Postcode2)" )
    {
        getobj(txt).value = "";
    }

}