function mnuImg_onfunction(iMnuNum, oImgID)
{
    lightup(oImgID.name);
    maintainHeaderMenuImages(iMnuNum);
}

function mnuImg_offfunction(iMnuNum, oImgID)
{
     lightup(oImgID.name);
}

function maintainHeaderMenuImages(iMnuNum)
{    
    
    iCurrentMenu = iMnuNum;
    switch (iMnuNum)
    {
        case 1:           
           turnoff('pic6');
           turnoff('pic7');
		turnoff('pic8');
		turnoff('pic14');
           break;
        case 2:
            turnoff('pic5');
            turnoff('pic7');
			turnoff('pic8');
			turnoff('pic14');
            break;
        case 3:
           turnoff('pic5');
           turnoff('pic6');
		   turnoff('pic8');
		   turnoff('pic14');
		   break;
        case 4:
           turnoff('pic5');
           turnoff('pic6');
		   turnoff('pic7');
		   turnoff('pic14');
           break;
        case 5:
           turnoff('pic5');
           turnoff('pic6');
		   turnoff('pic7');
		   turnoff('pic8');
           break;           
    } 
}

function resetHeaderMenuImages(iMnuNum)
{    
    iCurrentMenu  = 0;   
    switch (iMnuNum)
    {
        case 1:           
           turnoff('pic5');
           break;
        case 2:
            turnoff('pic6');
            break;
        case 3:
            turnoff('pic7');
			break;
		case 4:
            turnoff('pic8');
            break;
  		case 5:
            turnoff('pic14');
            break;          
    } 
}

function lightup(imgName)
{
	if (document.images)
	{
		imgOn=eval(imgName + "on.src");        
		document[imgName].src= imgOn;
	}
}
				
function turnoff(imgName)
{
	if (document.images)
	{
    	imgOff=eval(imgName + "off.src");
		document[imgName].src= imgOff;
	}
}