function checkform() {
	sEmail = document.frmContact.iEmail.value;
	if (sEmail.length < 1) {
		alert("Please specify a valid email address!");
	}
}

function chkbox() {
	sChkbox = document.frmContact.nl.value;
	if(sChkbox==1){
		document.frmContact.nl.value=0;
		document.frmContact.nl.checked=false;
		}else{
		document.frmContact.nl.value=1;
		document.frmContact.nl.checked=true;
		}
	}
	
function haserror(err){
	var error = err;
	var browser=navigator.appName;

	if(browser=="Microsoft Internet Explorer"){
     	parent.history.go(-2);
	}else{
		parent.history.go(-1);
	}
	
	alert("The following field(s) has errors: "+error);
	
	}