timerID = null;
var active = 0;

function ChangePage(num){
    	if(document.getElementById){
    		obj[active].style.visibility = "hidden";
    		active = num;
    		obj[active].style.top = 0;
    		obj[active].style.visibility = "visible";
    	}
}
    
function ScrollUp(speed)
{
    	if(document.getElementById)
    		{
    		if(parseInt(obj[active].style.top) < 0)
    			{
    			obj[active].style.top = parseInt(obj[active].style.top) + speed + "px";
				}
    				timerID = setTimeout("ScrollUp("+speed+")",30);
    		}
}

function ScrollDown(speed)
{
    	if(document.getElementById)
    		{                        
    		if(parseInt(obj[active].style.top) > document.getElementById('cont').offsetHeight - obj[active].offsetHeight)
    			{ 
    			obj[active].style.top = parseInt(obj[active].style.top) - speed + "px";
				}
    		timerID = setTimeout("ScrollDown("+speed+")",30);
    		}
}

function ScrollStop()
{
    	if(document.getElementById)
    	{
    		clearTimeout(timerID);
    	}
}

function ScrollPageInit()
 { 
    	if(document.getElementById)
    	{
    		obj = document.getElementById("cont").getElementsByTagName("div");
    		obj['page1'].style.visibility = "visible";
    		obj['page1'].style.top = 10;	
    	}	
  /* 	if(document.addEventListener)
    	{
    		for(i=0;i<document.getElementsByTagName('a').length;i++)
    		{
    			document.getElementsByTagName('a')[i].style.position = "relative";
			}
    	} */
}