var scrnW;
	var scrnH;
	
	var mx1,mx2,my1,my2;
	var x1,x2,y1,y2;
	
	function initV() {
		scrnW =getInnerWidth();
		scrnH =getInnerHeight();
		x1 = 500;
		y1 = 500;
		x2 = 500;
		y2 = 500;
		mx1 = rander(scrnW);
		my1 = rander(scrnH);
		mx2 = rander(scrnW);
		my2 = rander(scrnH);
	}
	
	function getScrollY() {
		if(window.scrollY) {
			return window.scrollY;
		} else {
			return document.body.scrollTop;
		}
	}
	
	function mv() {
		
		if (rander(100)<2) {
			mx1 = rander(scrnW);
			my1 = rander(scrnH)+getScrollY();
		}
		if (rander(100)<2) {
			mx2 = rander(scrnW);
			my2 = rander(scrnH)+getScrollY();
		}
		
		sx1 = Math.round((mx1-x1)/10.0);
		sy1 = Math.round((my1-y1)/10.0);
		sx2 = Math.round((mx2-x2)/10.0);
		sy2 = Math.round((my2-y2)/10.0);
		
		x1 = x1 + sx1;
		y1 = y1 + sy1;
		x2 = x2 + sx2;
		y2 = y2 + sy2;
		
		KaigaMoveTo(document.getElementById("kaiganick1"),x1,y1);
		KaigaMoveTo(document.getElementById("kaiganick2"),x2,y2);
		
	}
	function KaigaMoveTo(obj,x,y) {
			obj.style.left = x;
			obj.style.top = y;
	}
	
	function getInnerHeight(){
		if(window.opera)
			return window.innerHeight ;        //o6,o7用
		else if(document.all)
			return document.body.clientHeight ;//e4,e5,e6用
		else if(document.layers)
			return  window.innerHeight ;       //n4用
		else if(document.getElementById)
			return window.innerHeight;         //n6,n7,m1,s1用
		return null;
	}
	function getInnerWidth(){
		if(window.opera)
			return window.innerWidth ;        //o6,o7用
		else if(document.all)
			return document.body.clientWidth; //e4,e5,e6用
		else if(document.layers)
			return  window.innerWidth;       //n4用
		else if(document.getElementById)
			return window.innerWidth;         //n6,n7,m1,s1用
		return null;
	}
	function rander(r) {
		return Math.random()* r;
	}