if (document.images) {            // Active Images
	img1on = new Image();      
    img1on.src = "res/nav_1-over.gif"; 
	img2on = new Image();      
    img2on.src = "res/nav_2-over.gif"; 
	img3on = new Image();      
    img3on.src = "res/nav_3-over.gif"; 
	img4on = new Image();      
    img4on.src = "res/nav_4-over.gif"; 
	img5on = new Image();      
    img5on.src = "res/nav_5-over.gif";
	img6on = new Image();      
    img6on.src = "res/nav_6-over.gif";
	
  
    img1off = new Image();      
    img1off.src = "res/nav_1.gif"; 
	img2off = new Image();      
    img2off.src = "res/nav_2.gif"; 
	img3off = new Image();      
    img3off.src = "res/nav_3.gif"; 
	img4off = new Image();      
    img4off.src = "res/nav_4.gif"; 
	img5off = new Image();      
    img5off.src = "res/nav_5.gif";
	img6off = new Image();      
    img6off.src = "res/nav_6.gif";
	
	
	
}



// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}

// Function to check checkboxes on page
function fncCheckPage(objForm,intCheckSumValue) {
	var strElementName;
	var strElementType;
	var strElementValue;
	var strElementChecked;
	var objElement;
	var intTotal = 0;
	var intCheckedElements = 0;
	
	for(var i=0; i<objForm.length; i++) {
		objElement = objForm.elements[i];
		strElementName = objElement.name;
		strElementType = objElement.type;
		if(strElementType == 'radio') {
			strElementChecked = objElement.checked;
			if(strElementChecked == true) {
				strElementValue = objElement.value;
				intCheckedElements = intCheckedElements + 1;
				intTotal = eval(intTotal) + eval(strElementValue);
			}
		}
	}
	
	if(intTotal == intCheckSumValue) {
		document.location = '4-1.cfm';
	} else {
		if(intCheckedElements < intCheckSumValue) {
			alert('Please complete the questionnaire.');
		} else {
			document.location = '4-2.cfm';
		}
	}
}

// Function for text expand/collapse (questionnaire)
function showHideTable(theTable,theImg)
{
if (document.getElementById(theTable).style.display == 'none')
  {
  document.getElementById(theTable).style.display = 'block';
  document.getElementById(theImg).src='res/minus.jpg';
  }
  else
  {
  document.getElementById(theTable).style.display = 'none';
     document.getElementById(theImg).src='res/plus.jpg';

  }
}

// -->
// function to open new window
function openBrWindow(theURL,winName,features) {
  window.open(theURL,winName,features);
}
// -->