// JavaScript Document


function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function JM_cc(ob){
var obj=MM_findObj(ob); if (obj) { 
obj.select();js=obj.createTextRange();js.execCommand("Copy");}
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}


	function isEmail(email)
	{
		  var emailPat='^[a-zA-Z0-9]{1}[\.a-zA-Z0-9_-]*[a-zA-Z0-9]{1}@[a-zA-Z0-9]+[-]{0,1}[a-zA-Z0-9]+[\.]{1}[a-zA-Z]+[\.]{0,1}[a-zA-Z]+$'; 
		  var matchArray=email.match(emailPat); 
		  if (matchArray == null) 
		  {
			  return false;
		  }
		  else
		  {
			  return true;
		  }
	}
	
	
	// 去除字符串左右两边的空格
	function  jtrim(s)  
	{  
  	 	var  i,b=0,e=s.length;  
    	for(i=0;i<s.length;i++) //去左空格
		{
          	if(s.charAt(i)!=' ')
		  	{
			  	b=i;
			  	break;
		  	}  
		}
    	if(i==s.length)
		{
        	return  "";  
		}

   		for(i=s.length-1;i>b;i--)
		{
       		if(s.charAt(i)!=' ')
	   		{
		  		 e=i;
		   		 break;
	   		} 
   		}
		
  		return  s.substring(b,e+1);  
	}
	
	// 是否是空串？
	function isEmpty(string)
	{
		string = jtrim(string);
		if(string=='')
		{
			return true;
		}
		else
	    {
			return false;
		}
	}


	//去左空格; 
	function ltrim(s)
	{ 
		return s.replace( /^\s*/, ""); 
	} 
	//去右空格; 
	function rtrim(s)
	{ 
		return s.replace( /\s*$/, ""); 
	} 
	//去左右空格; 
	function trim(s)
	{ 
		return rtrim(ltrim(s)); 
	}
	
	
	// 选择所有的check box
function checkall(form, prefix, checkall) 
{
	var checkall = checkall ? checkall : 'chkall';
	for(var i = 0; i < form.elements.length; i++) {
		var e = form.elements[i];
		if(e.name && e.name != checkall && (!prefix || (prefix && e.name.match(prefix)))) {
			e.checked = form.elements[checkall].checked;
		}
	}
}


// 是否未选择任何
function checkempty(form, prefix)
{
	for(var i = 0; i < form.elements.length; i++) {
		var e = form.elements[i];
		if(e.name && (!prefix || (prefix && e.name.match(prefix)))) {
			if( e.checked )
			{
				return false;
			}
		}
	}
	
	return true;
}