function tcprepare(current){
	var current_form = current.form.id;
		//entfernen
		for(i=0;i<document.forms.length;i++){
			//document.getElementsByTagName('form')[i];
			remove_hidden(document.forms[i].id,i);
		}
		//dem aktuellen hinzufuegen
		for(i=0;i<document.forms.length;i++){
			if(document.forms[i].id == current_form){
				create_hidden(current_form,i);
			}
		}
		if(typeof(wt_ftinstall) != "undefined")wt_ftinstall();

}

function create_hidden(current_form,i){
	var hidden_field = document.createElement("input");
	hidden_field.type = 'hidden';
	hidden_field.name = "wt_form";
	hidden_field.value = "1";
	hidden_field.id = "wt_form_" + i;
	document.getElementById(current_form).appendChild(hidden_field);
}


function remove_hidden(other_form,i){
	 if (document.getElementById("wt_form_" + i) != null) {
		document.getElementById(other_form).removeChild(document.getElementById("wt_form_" + i));
	}
  
}