function clearField(targetfield,value) { //v3.0
	if(targetfield.value==value) targetfield.value='';
}

function showHide(shID) {
	if (document.getElementById(shID)) {
		if (document.getElementById(shID).style.display != 'block') {
			document.getElementById(shID).style.display = 'block';
		}
		else {
			document.getElementById(shID).style.display = 'none';
		}
	}
}

function popupWin(url,windowName) {
  window.open(url,windowName,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=550,height=400,screenX=100,screenY=80,top=150,left=150');
}