String.prototype.trim = function() {
	a = this.replace(/^\s+/, ''); return a.replace(/\s+$/, '');
};

function $(idname){
	if (document.getElementById){ return document.getElementById(idname); } 
	else if (document.all) { return document.all[idname];} 
	else if (document.layers) {	return document.layers[idname];	}
	else { return null; }
};

function getObject(id) {
	if (document.getElementById(id)) {
		return document.getElementById(id);
	} else if(document.all) {
		return document.all[id];
	} else if(document.layers) {
		return document.layers[id];
	}
}

function hidden_error(errid) {
	try {
		$("dialogError").style.display = 'none';
	}catch (e){};
	try {
		$(errid).style.display = 'none';
	}catch (e){}
};

function is_null(val){
	return (val == "" || val == null || val == "undefined");
};

function showErrortext(msg,errid,geid)
{
	var divBody = '<img src="img/v2_sc_ico.gif" width="21" height="18" align="absmiddle" hspace="6">' + msg ;
	$(errid).innerHTML = divBody;
	$(geid).focus();
}

function showError(msg,errid,geid)
{
	var divBody = '<img src="img/v2_sc_ico.gif" width="21" height="18" align="absmiddle" hspace="6">' + msg ;
	$(errid).innerHTML = divBody;
}

/*  检测表单选项长度  */
function checkLength(obj,max_len)
{
    var length_show = obj.name + '_maxlength'; 
	
	if (obj.value.length > max_len )
		obj.value = obj.value.substring(0,max_len);
		
    var left_len =  max_len - obj.value.length;
	
    if (left_len >= 0)
        document.getElementById(length_show).innerHTML = left_len;
	
	return	true;
}

/*分页page处理*/
function filterPage(page,totalpage)
{
	try
	{
		page=parseInt(page);
	}
	catch (e)
	{
		page=1;
	}
	if(isNaN(page)||page<=0)
	{
		page=1;
	}
   if(page>totalpage&&totalpage>0)
	{
		page=totalpage;
	}
	return page;
}

function str_len(key){
	var l=escape(key),len; 
	len=l.length-(l.length-l.replace(/\%u/g,"u").length)*4;
	l=l.replace(/\%u/g,"uu");
	len=len-(l.length-l.replace(/\%/g,"").length)*2;
	return len;
};

function isMail(mail)  {  
    return(new RegExp(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/).test(mail)); 
}

function trim(obj){
	str = obj.split(/^\s+|\s+$/)[0];
	return str;
}

function sError(msg,errid) //出错sError提示
{
	var divBody = '<img src="/newimg/x.gif" width="15" height="15" align="absmiddle" hspace="6">' + msg ;
	$(errid).innerHTML = divBody;
}

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_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_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];}
}