function swapimage_main(idno){
document.getElementById('1').style.display="none";
document.getElementById('2').style.display="none";
document.getElementById('3').style.display="none";
document.getElementById('4').style.display="none";
document.getElementById('5').style.display="none";
document.getElementById('6').style.display="none";
document.getElementById('7').style.display="none";


document.getElementById(idno).style.display="";

}

function swapimage(idno){
document.getElementById('1').style.display="none";
document.getElementById('2').style.display="none";
document.getElementById('3').style.display="none";
document.getElementById('4').style.display="none";
document.getElementById('5').style.display="none";
document.getElementById('6').style.display="none";
document.getElementById('7').style.display="none";
document.getElementById('8').style.display="none";
document.getElementById('10').style.display="none";

document.getElementById('11').style.display="none";
document.getElementById('12').style.display="none";
document.getElementById('13').style.display="none";
document.getElementById('14').style.display="none";
document.getElementById('15').style.display="none";
document.getElementById('16').style.display="none";
document.getElementById('17').style.display="none";
document.getElementById('18').style.display="none";

document.getElementById('19').style.display="none";
document.getElementById('20').style.display="none";
document.getElementById('21').style.display="none";
document.getElementById('22').style.display="none";
document.getElementById('23').style.display="none";
document.getElementById('24').style.display="none";
document.getElementById('25').style.display="none";
document.getElementById('26').style.display="none";
document.getElementById('27').style.display="none";
document.getElementById('28').style.display="none";
document.getElementById('29').style.display="none";
document.getElementById('30').style.display="none";
document.getElementById(idno).style.display="";

}

var msgwin = null;
var winwide = screen.availWidth;

function open_window(URL,wt,ht)	{

msgwin=window.open(URL,"NewWindow","toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width="+ wt +",height="+ ht +",top=100,left=300")
}

function open_windowsc(URL,wt,ht)	{

msgwin=window.open(URL,"NewWindow","toolbar=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width="+ wt +",height="+ ht +",top=100,left=300")
}

function shutIt() {
  if (msgwin != null && msgwin.open) msgwin.close();
}
window.onfocus=shutIt;

var email_bn = "<a href='mai";
email_bn += "lto:reachme";
email_bn += "@";
email_bn += "balannambiar.com?Subject=Web query'><img src=\"i/mailid.gif\" width=\"240\" height=\"14\" alt=\"Balan Nambiar : Painter, sculptor, enamellist, photographer and research scholar, Bangalore, India\" border=\"0\"></a>";

function isEmpty(str) {
	return ((str == null) || (str == ""));
}

function validate(){
    var err = "";
    var focus = "";
	
	

	if (isEmpty(document.getElementById('Name').value)){
        if (isEmpty(err))
            focus="#firstname";
        	err += "You must provide your Name.\n";
    }	

if (isEmpty(document.getElementById('Email').value)){
        if (isEmpty(err))
            focus="#email";
        err += "You must provide your Email address.\n";
        }
        else {
	        tempstring = document.getElementById('Email').value;
        	if ((tempstring.indexOf('@') == -1 ) || (tempstring.indexOf('.') == -1 )){
    	      err += "Ensure that your Email address is valid.\n";
        	  focus="#email";
        	}
    	};
		

    // check if any errors have been generated, if so display alert

    if (err != "") {
        var msg = "The form was not submitted.\n";
        msg += "Please fill in all required fields and resubmit. Thank you.\n\n" + err;
        alert(msg);
        location.href = focus;
        return false;
    }
    // all checks validated, allow form to be submitted
    return true;
}