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 = 0;	

    	}	

    	if(document.addEventListener){

    		for(i=0;i<document.getElementsByTagName('a').length;i++){

    			document.getElementsByTagName('a')[i].document.style.position = "relative";

		}

    	}

}