function showHide(objId) {
	if(document.getElementById(objId).style.display == "none") {
		document.getElementById(objId).style.display = "block";	
	}else{
		document.getElementById(objId).style.display = "none";
	}
}

function checkForInt(obj) {	
	var s = obj.value;	
	var search1 = new RegExp( "[^0-9\\s]+", "igm" );
	var search3 = new RegExp( "[ ]+", "igm" );
	obj.value=s.replace( search1, " " ).replace( search3, "" );
}