/*----------   checkbox  -----------------*/
	function checkAll(){
		var el = document.getElementsByTagName('input');
		var len = el.length;
		for(var i=0; i<len; i++){
			if((el[i].type=="checkbox") && (el[i].name=='checkboxid')){
				el[i].checked = true;
			}
		}

	}
	function clearAll(){
		var el = document.getElementsByTagName('input');
		var len = el.length;
		for(var i=0; i<len; i++){
			if((el[i].type=="checkbox") && (el[i].name=='checkboxid')){
				el[i].checked = false;
			}
		}
	}
	function swithcCheck(){
		var el = document.getElementById('swithccheckbox');
		if(el.checked){
			checkAll();
		}else{
			clearAll();
		}
	}
	
	function isChecks(){
		var el = document.getElementsByTagName('input');
		var len = el.length;
		for(var i=0; i<len; i++){
			if((el[i].type=="checkbox") && (el[i].name=='checkboxid') && (el[i].checked==true)){
				return true;
			}
		}
		return false
	}
	
	/*-------------------*/
	function openwin(url,w,h){
		var style = 'width='+w+'px, height='+h+'px, top=60,left=100'+
        'directories=yes,localtion=no, menubar=no, status=yes,'+
        'toolbar=no,scrollbars=yes, resizable=yes,titlebar=no';
  		window.open(url,'_win',style);
  		window.focus();
	}
	
	
	function openwindow(url,name,iWidth,iHeight){
	  var url;//转向网页的地址;
	  var name;//网页名称，可为空;
	  var iWidth;//弹出窗口的宽度;
	  var iHeight;//弹出窗口的高度;
	  var iTop = (window.screen.availHeight-30-iHeight)/2;//获得窗口的垂直位置;
	  var iLeft = (window.screen.availWidth-10-iWidth)/2;//获得窗口的水平位置;
	  window.open(url,name,'height='+iHeight+',,innerHeight='+iHeight+',width='+iWidth+',innerWidth='+iWidth+',top='+iTop+',left='+iLeft+',toolbar=no,menubar=no,scrollbars=yes,resizeable=no,location=no,status=no');
 	}