function gebi(obj,ret){if (document.getElementById(obj)){if (ret) return document.getElementById(obj);else return true;} else return false;}

	function check_all(y,t){

		var checkboxs = document.getElementsByTagName("INPUT");

		if (y){

			for (i = 0; i < checkboxs . length; i++){

    		if ((checkboxs[i].type=="checkbox") && (checkboxs[i].id==y)) checkboxs[i] . checked  = "checked";

    	}

  	}

  	if (y && t){

			for (i = 0; i < checkboxs . length; i++){

				s=checkboxs[i].id;

				s=s.substr(0,t);

   	 		if ((checkboxs[i].type=="checkbox") && (s == y))checkboxs[i] . checked  = "checked";

  		}

  	}

  	if (!y){

			for (i = 0; i < checkboxs . length; i++){

				s=checkboxs[i].id;

				s=s.substr(0,7);

   	 		if ((checkboxs[i].type=="checkbox") && (s == 'iditem_'))checkboxs[i] . checked  = "checked";

  		}

  	}

		return false;

		}



		function uncheck_all(y,t){

			var checkboxs = document.getElementsByTagName("INPUT");

			if (y && !t){

				for (i = 0; i < checkboxs . length; i++){

  				if ((checkboxs[i].type=="checkbox") && (checkboxs[i].id==y)) checkboxs[i] . checked  = "";

  			}

  		}

  		if (y && t){

				for (i = 0; i < checkboxs . length; i++){

					s=checkboxs[i].id;

					s=s.substr(0,t);

  				if ((checkboxs[i].type=="checkbox") && (s == y)) checkboxs[i] . checked  = "";

  			}

  		}

  		if (!y){

				for (i = 0; i < checkboxs . length; i++){

					s=checkboxs[i].id;

					s=s.substr(0,7);

  				if ((checkboxs[i].type=="checkbox") && (s == 'iditem_')) checkboxs[i] . checked  = "";

  			}

  		}

		return false;

		}



	function multidelete(){

		if (!confirm('Are you sure want to delete?')) return false;

		document.getElementById('del_form').submit();return false;}



	function cdelete(prefix,i){

		if (!confirm('Are you sure want to delete?')) return false;

		uncheck_all();

		if (document.getElementById(prefix+i))document.getElementById(prefix+i).checked="checked";

		if (document.getElementById('del_form'))document.getElementById('del_form').submit();

		return false;}