function MultiSelector( file_prefix, list_target, max )
{
	this.file_prefix = file_prefix;
	this.list_target = list_target;
	this.count = 0;
	this.id = 0;

	if( max )
	{
		this.max = max;
	}
	else
	{
		this.max = -1;
	};
	
	this.addElement = function( element )
	{
		if( element.tagName == 'INPUT' && element.type == 'file' )
		{
			element.name = this.file_prefix + '_' + this.id++;
			element.multi_selector = this;
			element.onchange = function()
			{
				var new_element = document.createElement( 'input' );
				new_element.type = 'file';
				this.parentNode.insertBefore( new_element, this );
				this.multi_selector.addElement( new_element );
				this.multi_selector.addListRow( this );
				this.style.position = 'absolute';
				this.style.left = '-1000px';
			};

			if( this.max != -1 && this.count >= this.max )
			{
				element.disabled = true;
			};

			this.count++;
			this.current_element = element;
		}
		else
		{
			alert( 'Error: not a file input element' );
		};
	};

	this.addListRow = function( element )
	{
		var new_row_button = document.createElement( 'input' );
		new_row_button.onclick= function()
		{
			this.parentNode.element.parentNode.removeChild( this.parentNode.element );
			this.parentNode.parentNode.removeChild( this.parentNode );
			this.parentNode.element.multi_selector.count--;
			this.parentNode.element.multi_selector.current_element.disabled = false;
			return false;
		};

		var new_row = document.createElement( 'div' );
		new_row_button.type = 'button';
		new_row_button.value = 'Delete';
		new_row.element = element;
		new_row.innerHTML = element.value + '  ';
		new_row.appendChild( new_row_button );

		this.list_target.appendChild( new_row );
	};
};