function layeron(m){
	if(document.all) {
		document.getElementById(m).style.filter="blendTrans(duration=.2)";
		document.getElementById(m).filters.blendTrans.Apply();
	}
	document.getElementById(m).style.visibility =  'visible';
	document.getElementById(m).filters.blendTrans.Play();
}
function layeroff(m){
	document.getElementById(m).style.visibility =  'hidden';
}

function on(m,n){
	if(document.all) {
		document.getElementById(m).style.filter="blendTrans(duration=.2)";
		document.getElementById(m).filters.blendTrans.Apply();	
	}
	document.getElementById(m).src =  'images/' + n;
	document.getElementById(m).filters.blendTrans.Play();	
}

function toggleMap(obj) {
if(obj.nextSibling.nodeType==3) {
    obj.nextSibling.nextSibling.style.display=(obj.nextSibling.nextSibling.style.display=='none')? 'table' : 'none';
    }
else {
    obj.nextSibling.style.display=(obj.nextSibling.style.display=='none')? 'block' : 'none';
    }
}


function validate_email(field,alerttxt)
{
with (field)
{
apos=value.indexOf("@");
dotpos=value.lastIndexOf(".");
if (apos<1||dotpos-apos<2) 
  {alert(alerttxt);return false;}
else {return true;}
}
}

function validate_form(thisform)
{
with (thisform)
{
if (validate_email(email,"Please enter a valid email address")==false)
  {email.focus();return false;}
if (name.value=="")
  {alert("Please enter your name");return false;}
}
}