function getBrowserInfo() {
 var t,v = undefined;
 if (window.opera) t = 'Opera';
 else if (document.all) {
  t = 'IE';
  var nv = navigator.appVersion;
  var s = nv.indexOf('MSIE')+5;
  v = nv.substring(s,s+1);
 }
 else if (navigator.appName) t = 'Netscape';
 return {type:t,version:v};
}

function high(which2){
	if(which2.className !== 'prev_img_active'){
		theobject=which2
		alfa_op=40; 
		highlighting=setInterval("highlightit(theobject)",40)
	}
}

function low(which2){ 
	if(which2.className !== 'prev_img_active'){
		clearInterval(highlighting)
		alfa_op=40; 
		alfa_op_op = alfa_op/100;
}

var b = getBrowserInfo();
if (b.type == 'IE' && b.version >= 4){ 
	if(which2.className !== 'prev_img_active'){
		which2.filters.alpha.opacity=alfa_op;
	}
}
else {
	if(which2.className !== 'prev_img_active'){
		which2.style.opacity=alfa_op_op; which2.style.KhtmlOpacity=alfa_op_op; which2.style.MozOpacity=alfa_op_op;
	}
}
}

function highlightit(cur2){
	
if (alfa_op<100) {
alfa_op+=10; 
alfa_op_op = alfa_op/100;

var b = getBrowserInfo();
if (b.type == 'IE' && b.version >= 4) { cur2.filters.alpha.opacity=alfa_op;}
else { cur2.style.opacity=alfa_op_op; cur2.style.KhtmlOpacity=alfa_op_op; cur2.style.MozOpacity=alfa_op_op; }
}
else if (window.highlighting) clearInterval(highlighting)
}



/* --------- Скрипт плавной смены картинок --------- */
var br = getBrowserInfo();

var predimg = 1;
var predgallery;

//сам эффект
function slideim(nom, lett){
	if (br.type == 'IE' && br.version >= 4){
		if(document.getElementById(nom+lett).filters.alpha.opacity < 100){
		document.getElementById(nom+lett).filters.alpha.opacity = document.getElementById(nom+lett).filters.alpha.opacity * 1.63;}
		else{
		stopslide();}
	}
	else{
		if(document.getElementById(nom+lett).style.opacity < 1){
		document.getElementById(nom+lett).style.opacity = document.getElementById(nom+lett).style.opacity * 1.51;}
		else{
		stopslide();}
	}
}

var time = false;
var imagenom;
var imgletter;

//запуск эффекта
function stslide(n, l){
	if(!predgallery){
		predgallery = l;}
	if(predgallery && predgallery!==l){
		for(z=1; document.getElementById(z+l)!=null; z++){
			if (br.type == 'IE' && br.version >= 4){
			document.getElementById(z+predgallery).filters.alpha.opacity = 100;}
			else{
			document.getElementById(z+predgallery).style.opacity = 1;}
		}
		for(x=1; document.getElementById(x+l)!=null; x++){
			if(document.getElementById(x+l).style.zIndex == '103'){
				nowimg = x;
			}
		}
	predimg = nowimg;
	predgallery = l;
	}
	if(document.getElementById(n+l).style.zIndex == '103'){
	predimg = n;
	}
	if(document.getElementById(n+l).style.zIndex !== '103'){
		document.getElementById(n+l).style.zIndex = 103;
		document.getElementById(predimg+l).style.zIndex = 102;
		for(i=1; document.getElementById(i+l)!=null; i++){
			if(i!=n && i!=predimg){
				document.getElementById(i+l).style.zIndex = 101;}
		}
		if (br.type == 'IE' && br.version >= 4){
		document.getElementById(n+l).filters.alpha.opacity = 1;}
		else{
		document.getElementById(n+l).style.opacity = 0.01;}
		imgnom = n;
		imgletter = l;
		if(time){
		stopslide();
			for(f=1; document.getElementById(f+l)!=null; f++){
				if(f!=n && f!=predimg){
					if (br.type == 'IE' && br.version >= 4){
					document.getElementById(f+l).filters.alpha.opacity = 100;}
					else{
					document.getElementById(f+l).style.opacity = 1;}
				}
			}
		time = setInterval('slideim(imgnom, imgletter)', 30);
		predimg = n;
		}
		else{
		time = setInterval('slideim(imgnom, imgletter)', 30);
//		alert(predimg)
		predimg = n;
		}
	}
}

function stopslide(){
	clearInterval(time);
	time = false;
}