function MM_preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
   var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
   if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}


function switchImg(num)
{
for (i=1; i<5; i++) {
document.images['photo' + (num)].src = "menu/photography/photography"+(num)+".jpg"
}
document.images.big.src = "photography/photography"+(num)+".jpg"
}

function switchWeb(num)
{
for (i=1; i<5; i++) {
   document.onmousedown['web'].src = clickNS;
}
document.images.big.src = "web/web"+(num)+".jpg"
}


IE4plus = (document.all) ? true : false;
NS4 = (document.layers) ? true : false;

function clickIE()
{
    return false;
}

function clickNS(e)
{
	if (e.which==2 || e.which==3) 
     {
       return false;
     }
}
if (!IE4plus) 
{
   document.captureEvents(Event.MOUSEDOWN || Event.MOUSEUP);
   document.onmousedown=clickNS;
   document.onmouseup= clickNS;
   document.oncontextmenu=clickIE; // For NS 6+
} 
else 
{
   document.onmouseup= clickIE;
   document.oncontextmenu=clickIE;
}