function positionImg(div, w, h, limitW, limitH) {
	
	t = limitH-h;
	top = Math.round(Math.random() * (t - 1) + 1);
	l = limitW-w;
	left = Math.round(Math.random() * (l - 1) + 1)
	
	document.getElementById(div).style.top = top+'px';
	document.getElementById(div).style.left = left+'px';
}

function winSize() {
	var myWidth = 0, myHeight = 0;
	if( typeof( window.innerWidth ) == 'number' ) {
		//Non-IE
		myWidth = window.innerWidth;
		myHeight = window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		//IE 6+ in 'standards compliant mode'
		myWidth = document.documentElement.clientWidth;
		myHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		//IE 4 compatible
		myWidth = document.body.clientWidth;
		myHeight = document.body.clientHeight;
	}
	//window.alert( 'Width = ' + myWidth );
	//window.alert( 'Height = ' + myHeight );
	var returnArray = new Array(myWidth, myHeight);
	return returnArray[0];
}