/**
* active (on mouse-over) picture file will have name:    bk1-a.jpg
* non active (on mouse out) picture file will have name: bk1-b.jpg (b for basic)
*/
var statusMarkPrefix = "--";
var activeMark = "--a";
var basicMark = "--b";	
function imgMouseOnOver(img)
{
	imgSrc = img.src;
	//alert("imgMouseOnOut():imgSrc="+imgSrc);
	idx = imgSrc.indexOf(statusMarkPrefix);
	newSrc = imgSrc.substring(0,idx)+ activeMark+".jpg";
	//alert("imgMouseOnOut():"+newSrc);
	img.src = newSrc;
}

function imgMouseOnOut(img)
{
	imgSrc = img.src;
	//alert("imgMouseOnOut():imgSrc="+imgSrc);
	idx = imgSrc.indexOf(statusMarkPrefix);
	newSrc = imgSrc.substring(0,idx)+ basicMark+".jpg";
	//alert("imgMouseOnOut():"+newSrc);
	img.src = newSrc;
}

/**
	Updates main menu map picture on mouse over on some ares.
	basic image - when mouse is not on any area  mapNoOver.gif
	map1.gif - when mouse is on first area
	...
	
	*/
function mmOver(itemNo)
{
	img = document.mainMenuImgMap;
	img.src = "img/mmOn"+itemNo+".jpg";
}

function mmOut()
{
	img = document.mainMenuImgMap;
	img.src = "img/MenuNoOver.jpg";
}