var first_logo = 0;
function moveLogo(e) {
	if(first_logo == 1) {
	    e = e || window.event;
	    var cursor = {x:0, y:0};
		var logo = {x:0, y:0};
	    if (e.pageX || e.pageY) {
	        cursor.x = e.pageX;
	        cursor.y = e.pageY;
	    } 
	    else {
	        cursor.x = e.clientX + 
	            (document.documentElement.scrollLeft || 
	            document.body.scrollLeft) - 
	            document.documentElement.clientLeft;
	        cursor.y = e.clientY + 
	            (document.documentElement.scrollTop || 
	            document.body.scrollTop) - 
	            document.documentElement.clientTop;
	    }
		winW = window.innerWidth;
		winH = window.innerHeight;
		if (navigator.appName.indexOf("Microsoft")!=-1) {
			winW = document.body.offsetWidth+20;
			winH = document.body.offsetHeight+20;
		}
		logo.x = cursor.x-((winW-970)/2+910);
		logo.y = cursor.y-270;
		if (logo.x >=100) {
			logo.x = 100;
		}
		if (logo.x <=-100) {
			logo.x = -100;
		}
		if (logo.y >=100) {
			logo.y = 100;
		}
		if (logo.y <=-100) {
			logo.y = -100;
		}
		//
		document.getElementById("brain_logo_2").style.left = (logo.x/28+4) +"px";
		document.getElementById("brain_logo_2").style.top = (logo.y/28+4) +"px";
		//
		document.getElementById("brain_logo_3").style.left = (logo.x/17+6) +"px";
		document.getElementById("brain_logo_3").style.top = (logo.y/17+6) +"px";
		//
		document.getElementById("brain_logo_4").style.left = (logo.x/13+8) +"px";
		document.getElementById("brain_logo_4").style.top = (logo.y/13+8) +"px";
		//
		document.getElementById("brain_logo_5").style.left = (logo.x/10+10) +"px";
		document.getElementById("brain_logo_5").style.top = (logo.y/10+10) +"px";
	}
}
window.setTimeout(function logoWait() {
	first_logo = 1;
},500);
document.onmousemove= moveLogo;