Object.prototype.move = function(x, y, z) {
	var width = this.offsetWidth;
	var height = this.offsetHeight;
	
	
	var cur_top = this.offsetTop;
	var cur_left = this.offsetLeft;
	
	var k = 10;
	
	
	var new_top = (((k*y)+cur_top));
	var new_left = (((k*x)+cur_left));
	
	if (new_top < 0)
		new_top = 0;
	if (new_left < 0)
		new_left = 0;
	
		
	var doc_w = window.innerWidth;
	var doc_h = window.innerHeight;
	
	if (new_top > (doc_h - height))
		new_top = doc_h - height;
	
	if (new_left > (doc_w - width))
		new_left = doc_w - width;
		
		
	new_top += 'px';
	new_left += 'px';
	
//	alert('new_top');
	
	
	
	this.style.top = new_top;
	this.style.left = new_left;
	i++;

}


Object.prototype.grow = function(k) {
	var wandh = this.offsetWidth + k;
	
		
	width = this.offsetWidth;
	height = this.offsetHeight;
	
		
	if (wandh < 15)
		wandh = 15;
	if (wandh > 600)
		wandh = 600;
	
//	this.style.mozBorderRadius = wandh+'px';
	
	this.style.width = wandh+'px';
	this.style.height = wandh+'px';
}