function MultiSelector( eprefix, list_target,max, del_label ){
	this.list_target = list_target;
	this.count = 0;
	this.id = 0;
	if( max ){
this.max = max;
} else {
this.max = -1;
};
this.delete_label=del_label
this.element_name_prefix=eprefix;

this.addElement = function( element ){
 if( element.tagName.toLowerCase() == 'input' && element.type.toLowerCase() == 'file' ){
 element.name = this.element_name_prefix + "_mf_"+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 = this.delete_label;
 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 );
};
};