// Multiple file selector by Stickman -- http://www.the-stickman.com 
// with thanks to: [for Safari fixes] Luis Torrefranca -- http://www.law.pitt.edu and Shawn Parker & John Pennypacker -- 
http://www.fuzzycoconut.com [for duplicate name bug] 'neal'

function MultiSelector(list_target, max){
	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 = 'file_' + 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 = document.createElement('div');
		var new_row_button = document.createElement('input');
		new_row_button.type = 'button';
		new_row_button.value = 'Delete';
		new_row.element = element;
		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;
		};
		new_row.innerHTML = element.value;
		new_row.appendChild(new_row_button);
		this.list_target.appendChild(new_row);
	};
};