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_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { 
  	test=args[i+2]; 
  	val=MM_findObj(args[i]);
    if (val) { 
    	nm=val.name; 
    	if ((val=val.value)!="") {
      		if (test.indexOf('isEmail')!=-1) { 
      			p=val.indexOf('@');
        		if (p<1 || p==(val.length-1)) 
        			errors+='- '+nm+' must contain an e-mail address.\n';
      		} else if (test!='R') { 
      			num = parseFloat(val);
        		if (isNaN(val)) 
        			errors+='- '+nm+' must contain a number.\n';
        		if (test.indexOf('inRange') != -1) { 
        			p=test.indexOf(':');
          			min=test.substring(8,p); max=test.substring(p+1);
          			if (num<min || max<num) 
          				errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    			} 
    		} 
    	} else if (test.charAt(0) == 'R') 
    		errors += '- '+nm+' is required.\n'; }
  } 
  if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}

// added begin
// by Nature Zhao on June 22th, 2007

String.prototype.trim   =   function()
{
         //   用正则表达式将前后空?
         //   用空字符串替?
         return   this.replace(/(^\s*)|(\s*$)/g,   "");
}

// added end