var preloadFlag = false;

var isBlank = false;

function preloadImages()
{
	if (document.images)
	{
		nav_standard_over = newImage("images/nav_standard_over.gif");
		nav_filtered_over = newImage("images/nav_filtered_over.gif");
		nav_questions_over = newImage("images/nav_questions_over.gif");
		nav_short_over = newImage("images/nav_short_over.gif");
		nav_long_over = newImage("images/nav_long_over.gif");
		nav_labour_over = newImage("images/nav_labour_over.gif");
		nav_logout_over = newImage("images/nav_logout_over.gif");

		preloadFlag = true;
	}
	
	checkTarget();
}

function newImage(arg)
{
	if (document.images)
	{
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function checkTarget()
{
	//alert("Checking Target");
	
	if (isBlank == true){
		document.forms[0].target = '_blank';
	}else {
		if (document.forms[0].target == '_blank'){
			document.forms[0].target = '_self';
		}	
	}

	isBlank = false;
	//alert("Checking Target Done");
}


function checkTarget_LOCALHOST()
{
	//alert("Checking Target");
	
	if (isBlank == true && document.forms[0].chkCreatePDF.checked == false){
		document.forms[0].target = '_blank';
	}else {
		if (document.forms[0].target == '_blank'){
			document.forms[0].target = '_self';
		}	
	}

	isBlank = false;
	//alert("Checking Target Done");
}

function setBlankTarget()
{
	isBlank = true;
}

function changeImages(btnID, url)
{
	if (document.images && (preloadFlag == true))
		document.getElementById(btnID).src = url;
}

function KeyDownHandler(btn) {
   // process only the Enter key
   if (event.keyCode == 13)
   {
      // cancel the default submit
      event.returnValue=false;
      event.cancel = true;
      
      // submit the form by programmatically clicking the specified button
      if (document.getElementById(btn) != null)
         document.getElementById(btn).click();
   }
}

function setFocus(ctlID) { 
   if (document.getElementById(ctlID) != null)
      document.getElementById(ctlID).focus();
}