function isEmpty(elem, helperMsg,value_txt){
	if(elem.value.length == 0){
		alert(helperMsg);
		elem.focus(); // set the focus to this input
		elem.value=value_txt;
		return true;
	}
	return false;
}


function showDivTag(eid){
 document.getElementById(eid).style.display = 'block';
 document.getElementById(eid).style.visibility = 'visible';
 }

function hideDivTag(eid) {
 document.getElementById(eid).style.visibility = 'hidden';
 }