var bar1;
var submitcount=0;


function doLogin(obj) {
	var form = document.frmMain;
	if (form.usrname.value == "" || form.usrpwd.value == "" ) {alert("All fields are required."); return false;}
	if (submitcount == 0)
		{ 
			bar1.showBar();
			submitcount++;
			obj.setAttribute("value","Working...");
			document.body.style.cursor="wait";
			return true;
		}
		else 
		{
		alert("This form has already been submitted.  Thanks!");
		return false;
		}
	return false; 
}