function changeTab(imgOn, imgOff1, imgOff2, imgOff3, imgOff4, imgOff5, imgOff6, fid)
{	
	imgOn.src ='/hk/server/sbserver/windows/images/tab_' + imgOn.name + '_on.gif';
	imgOff1.src ='/hk/server/sbserver/windows/images/tab_' + imgOff1.name + '_off.gif';
	imgOff2.src ='/hk/server/sbserver/windows/images/tab_' + imgOff2.name + '_off.gif';
	imgOff3.src ='/hk/server/sbserver/windows/images/tab_' + imgOff3.name + '_off.gif';
	imgOff4.src ='/hk/server/sbserver/windows/images/tab_' + imgOff4.name + '_off.gif';
	imgOff5.src ='/hk/server/sbserver/windows/images/tab_' + imgOff5.name + '_off.gif';
	imgOff6.src ='/hk/server/sbserver/windows/images/tab_' + imgOff6.name + '_off.gif';	
	
	var itemToSwap;
	for (var i=1; i<=7; i++) {
		itemToSwap = document.all["Layer" + i];
		if (i == fid) {
			itemToSwap.style.display="inline";
		} else {
			itemToSwap.style.display="none";			
		}
	}
}


function getposOffset(overlay, offsettype){
	
	var totaloffset=(offsettype=="left")? overlay.offsetLeft : overlay.offsetTop;
	var parentEl=overlay.offsetParent;
	
	while (parentEl!=null){
		totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
		parentEl=parentEl.offsetParent;
	}
	return totaloffset;
}

function overlay(curobj, subobjName)
{
	
	var subobj=document.all[subobjName];

	subobj.style.top = (getposOffset(curobj, "top")* 1 + 32 )+"px";
	subobj.style.left = getposOffset(curobj, "left") +"px";
	subobj.style.display= "inline"
}


function overlay2(curobj, subobjName)
{
	
	var subobj=document.all[subobjName];

	subobj.style.top = (getposOffset(curobj, "top")* 1 + 16 )+"px";
	subobj.style.left = (getposOffset(curobj, "left")* 1 - 345) +"px";
	subobj.style.display= "inline"
}

function overlayclose(subobj){
	document.getElementById(subobj).style.display="none"
}