var activOblastSkt = 456;

		var forOne = 40;





function onstrelochki(){

	var topYn1 = parseInt(document.getElementById("skroller").style.top);

	var stTopA= document.getElementById('stTopA');

	var stBotA= document.getElementById('stBotA');

	

	if(topYn1>0){

		stTopA.style.display = '';

	}else{

		stTopA.style.display = 'none';

	}

	if(topYn1<activOblastSkt){

		stBotA.style.display = '';

	}else{

		stBotA.style.display = 'none';

	}

	

}



function loudOpis(){

	document.getElementById('opisanieTen').style.height=document.getElementById('opisanie').offsetHeight+'px';

	document.getElementById('opisanieTen').style.left='0px';

	document.getElementById('opisanie').style.left='0px';

	document.getElementById('opis').style.display = 'none';

}

function unloudOpis(){

	document.getElementById('opisanieTen').style.left='-3500px';

	document.getElementById('opisanie').style.left='-3500px';

	document.getElementById('opis').style.display = '';

}

function wheel(event)



{

		if (!event) 

		{

			event = window.event;

		}

		if (event.wheelDelta) 

		{

			wheelDelta = event.wheelDelta/120;

		} 

		else if (event.detail) 

		{    

			wheelDelta = -event.detail/3;			

		}

				

		if (wheelDelta)

		{

			var namber = (document.getElementById('onskroll').offsetHeight-document.getElementById('skrollAh').offsetHeight+5)/activOblastSkt;

							

			var aThumb = document.getElementById("skroller");

			var scrolldiv = document.getElementById("onskroll");

			var topYn = parseInt(aThumb.style.top);

			

			if(wheelDelta>0){wheelDelta=1;}else{wheelDelta=-1;}

			if(wheelDelta == 1){

				if(0<(topYn-forOne)){

				aThumb.style.top = (topYn-forOne)+"px";			

				scrolldiv.style.top = (-topYn*namber+(forOne*namber))+"px";		

				}else{

					aThumb.style.top = 0+"px";			

					scrolldiv.style.top = 0+"px";

				}

			}else if(wheelDelta == -1){

				if(activOblastSkt>(topYn+forOne)){

					aThumb.style.top = (topYn+forOne)+"px"				

					scrolldiv.style.top = (-topYn*namber-(forOne*namber))+"px"

				}else{

					aThumb.style.top = activOblastSkt+"px"				

					scrolldiv.style.top = (-(activOblastSkt*namber))+"px"

				}

			}	

			onstrelochki();

		}



		if (event.preventDefault)

		{

			event.preventDefault();

//			blockEvent(event);

		}

		event.returnValue = false;

}



function InitEvents()

{

	document.getElementById('opis').onclick = function(){loudOpis();}

	document.getElementById('offTen').onclick = function(){unloudOpis();}

}

function menuOn(){
	for(var i=0; i<document.getElementById('onskroll').getElementsByTagName('a').length;i++){
		document.getElementById('onskroll').getElementsByTagName('a')[i].onmouseover = function(){				
			if(this.className != 'selekta'){
				this.style.border = '1px solid #363738';	
				this.style.color='#bebebe';
				this.style.padding='4px 5px 0px 5px';		
			}
			
		}
		document.getElementById('onskroll').getElementsByTagName('a')[i].onmouseout = function(){
			if(this.className != 'selekta'){
				this.style.border = '0';	
				this.style.color='#bebebe';
				this.style.padding='5px 6px 1px 6px';
			}			
		}
	}
}

window.onload = function(){

	var l_Links = _$('onskroll').getElementsByTagName('a');
	if (l_Links[0] != undefined) ShowImages(l_Links[0]);
	
	menuOn();
	if(document.getElementById('skrollAh').offsetHeight<document.getElementById('onskroll').offsetHeight){
		document.getElementById('opis').onclick = function(){loudOpis();}
		document.getElementById('offTen').onclick = function(){unloudOpis();}
		var activOblastSkt = 456;
		var namberPr = (document.getElementById('onskroll').offsetHeight-document.getElementById('skrollAh').offsetHeight+5)/activOblastSkt;
		var aThumb = document.getElementById("skroller");
		var scrolldiv = document.getElementById("onskroll");
		
		Drag.init(aThumb, null, 0, 0, 0, activOblastSkt);
		aThumb.onDrag = function(x, y) {
		 scrolldiv.style.top=y * (-namberPr) +"px";
		}
		if (window.addEventListener) {

			document.getElementById("skrollAh").addEventListener("DOMMouseScroll", wheel ,false);
		}
		document.getElementById("skrollAh").onmousewheel = wheel;
	}else{
		document.getElementById('stBotA').style.display = 'none';
	}
}