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;};var c = element.value.lastIndexOf('\/');if (c != -1) html = element.value.substring(c+1);else {var c = element.value.lastIndexOf('\\');if (c != -1) html = element.value.substring(c+1);else html = element.value;};new_row.appendChild( new_row_button );var new_row_text = document.createElement( 'span' );new_row.appendChild(new_row_text);new_row_text.innerHTML = '  ' + html;this.list_target.appendChild( new_row );document.getElementById('maxfiles').value = this.id;};};