layerRef="";
styleRef="";
N=6;

if ((navigator.appName=="Netscape") && (navigator.appVersion<6.0))
	{
	layerRef=".layers";
	styleRef="";
	is_ie=0;
	}
else
	{	
	layerRef=".all";
	styleRef=".style";
	is_ie=1;
	}


function switchvis(lname, is_visible)
{
//alert(navigator.appVersion);
if (is_visible) {display="block"; visible="visible";} else {display="none"; visible="hidden";}
eval("document"+layerRef+"['"+lname+"']"+styleRef+".visibility='"+visible+"'");
eval("document"+layerRef+"['"+lname+"']"+styleRef+".display='"+display+"'");
}

function switchvis2(lname)
{
//alert(navigator.appName);
//alert(navigator.appVersion);
if (eval("document"+layerRef+"['"+lname+"']"+styleRef+".visibility")=="visible") is_visible=1; else is_visible=0;
if (!is_visible) {display="block"; visible="visible";} else {display="none"; visible="hidden";}
eval("document"+layerRef+"['"+lname+"']"+styleRef+".visibility='"+visible+"'");
eval("document"+layerRef+"['"+lname+"']"+styleRef+".display='"+display+"'");
}

function mailwindow()
{
myWin=window.open("mail.php", "wind", "width=600,height=250,left=600,top=0,resizable=no,toolbar=no,scrollbars=no,menubar=no,status=no");
}


function reset_all(smnum)
{
//clearTimeout(t);
for(i=1;i<=N;i++)
if (i!=smnum) eval("document"+layerRef+"['item"+i+"']"+styleRef+".visibility='hidden'");
}

function centerize(lname)
   { 
   if (is_ie)  { height = document.body.offsetHeight/2-50; width =   document.body.offsetWidth/2-100;}
   else  {height = window.innerHeight/2-50; width = window.innerWidth/2-150;}
   //alert("Ширина окна: " + width + "\nВысота окна: " + height);
   eval("document"+layerRef+"['"+lname+"']"+styleRef+".top="+height);
   eval("document"+layerRef+"['"+lname+"']"+styleRef+".left="+width);
   }