// ECLogin.js

// setFocus
function setFocus()
{	
	document.frmLoginPage.txtPONumber.focus();
}

//Validating purcahse order number
function checkPONumber()
{
	var poNbr = trim(document.frmLoginPage.txtPONumber.value);
	if(trim(poNbr).length == 0 || poNbr == "")
	{
		alert("Purcahse Order Number must not be empty");
		setFocus();
		return false;
	}
	else
	{
		document.frmLoginPage.submit();
	}
	return;
}

function rtrim(inString)
{
	while (1)
	{
		if (inString.substring(inString.length - 1, inString.length) != " ")
    		break;
	    inString = inString.substring(0, inString.length - 1);
	}
 	return inString;
}

function ltrim(inString)
{
	while (1)
	{
		if (inString.substring(0, 1) != " ")
     		break;
	    inString = inString.substring(1, inString.length);
  	}
	return inString;
}

function trim(inString)
{
	var tmpStr = ltrim(inString);
	return rtrim(tmpStr);
}

function keyDown(event)
{
	if ((event.which && event.which == 13)
    	|| (event.keyCode && event.keyCode == 13))
	{
	     checkPONumber();
	}
}