function Position( x, y )
{
	this.getValidDimension = function( dimension )
	{
		var valid_dimension = 0;		

		if ( dimension != null && typeof dimension == "number" )
		{
			valid_dimension = dimension;
		}
		
		return valid_dimension;
	};

	this.toString = function( )
	{
		return "( " + this.x + " x " + this.y + " )";
	};
	
	this.setX = function( x )
	{
		this.x = this.getValidDimension( x );
	};
	
	this.setY = function( y )
	{
		this.y = this.getValidDimension( y );
	};
	
	this.getX = function( )
	{
		return this.x;
	};
	
	this.getY = function( )
	{
		return this.y;
	};

	this.x = this.getValidDimension( x );
	this.y = this.getValidDimension( y );
}