function positionR() {
	var object = document.getElementById('welcome1');
	var bName = navigator.appName;
	if (bName == "Microsoft Internet Explorer") {
		W=document.body.clientWidth;
	} else if (bName == "Netscape") {
		W=window.innerWidth;
	}
	object.style.left = '-' + W;
	postion1();
}

function positionL() {
	var object = document.getElementById('welcome2');
	var bName = navigator.appName;
	if (bName == "Microsoft Internet Explorer") {
		W=document.body.clientWidth;
	} else if (bName == "Netscape") {
		W=window.innerWidth;
	}
	object.style.left = W;
	postion2();
}

function postion1() {
	var object = document.getElementById('welcome1');
	if (object.offsetLeft < 0) {
		var p = object.offsetLeft;
		if (p + 20 < 0) {
			object.style.left = (p + 20);
			setTimeout("postion1()", 15);
		} else {
			object.style.left = 0;
		}
  	}
}

function postion2() {
	var object = document.getElementById('welcome2');
	if (object.offsetLeft > 0) {
		var L = object.offsetLeft;
		if ((L - 20) >= 0) {
			object.style.left = L - 20;
			setTimeout("postion2()", 15);
		} else {
			object.style.left = 0;
		}
	}
}

function positionT() {
	var object = document.getElementById('school');
	var bName = navigator.appName;
	if (bName == "Microsoft Internet Explorer") {
		W=document.body.clientWidth;
		H=document.body.clientHeight;
	} else if (bName == "Netscape") {
		W=window.innerWidth;
		H=window.innerHeight;
	}
	object.style.width = W;
	object.style.top = H;
	topPosition();
}

function topPosition() {
	var object = document.getElementById('school');
	if (object.offsetTop > 0) {
		var T = object.offsetTop;
		if ((T - 20) >= 0) {
			object.style.top = T - 20;
			setTimeout("topPosition()", 15);
		} else {
			object.style.top = -10;
		}
	}
}