ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false
 
Employee				= new Image();
Employee.src			= "/images/common/EmployeeLogin.gif";
Employee_on				= new Image();
Employee_on.src			= "/images/common/EmployeeLoginOver.gif";

NewsBut					= new Image();
NewsBut.src				= "/images/common/NewsBut.gif";
NewsBut_on				= new Image();
NewsBut_on.src			= "/images/common/NewsButOver.gif";

HomeBut					= new Image();
HomeBut.src				= "/images/common/HomeBut.gif";
HomeBut_on				= new Image();
HomeBut_on.src			= "/images/common/HomeButOver.gif";

var currentImg = "";
ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false

function img_act(imgName) 
{
        imgOn = eval(imgName + "_on.src");
        document [imgName].src = imgOn;
}

function img_inact(imgName) 
{
	if(currentImg != imgName)
	{
        imgOff = eval(imgName + ".src");
        document [imgName].src = imgOff;
    }
}

function img_sel(imgName)
{
	temp = currentImg;
	currentImg = imgName;
	
	if(temp != "")
		img_inact(temp);
}