// JavaScript Document
function ff_sample_Key (form) {		
	var i,c1,c2,c3,c4,r = '',key;
	key = form.elements['__ff_key'].value;	
	for (i = 0; i < key.length - 3; i = i + 3) {
		c1 = key.charCodeAt(i);
		c2 = key.charCodeAt(i + 1);
		c3 = key.charCodeAt(i + 2);
		c4 = key.charCodeAt(i + 3);			
		r+=(String.fromCharCode(((c1 & c2) ^ (c3 | c4)) & 0x7f | 0x20));
	}
	form.elements['__ff_sample'].value=r;
	//alert(r);
}
function indexlogin_check(form){
		var regex = /^\s+|\s+$/;
		var un = form.elements['username'];
		var pwd =form.elements['password'];
		un.value = un.value.replace(regex,'');
		pwd.value = pwd.value.replace(regex,'');
			if(un.value.length<1 ){		
					alert('请输入用户名');un.focus();return false;
			}
			if(pwd.value.length<1 ){		
					alert('请输入密码');un.focus();return false;
			}
			if(un.value.length>1&&pwd.value.length>1){
			ff_sample_Key(form);
			form.elements['pre_url'].value=window.location.toString();
			return true;
			}
		}