//返回字符串长度，一个中文字符长度为2,字MU数字为1
function length(str){

 return str.replace(/[^\x00-\xff]/g,"**").length;

 	}

function setVariables() //返回上页按钮
{
if (navigator.appName == "Netscape") {
v=".top=";
dS="document.";
sD="";
y="window.pageYOffset";
}
else {
v=".pixelTop=";
dS="";
sD=".style";
y="document.body.scrollTop";
}
}
function checkLocation() {
object="object1";
yy=eval(y);
eval(dS+object+sD+v+yy);
setTimeout("checkLocation()",10);
}

function setDisabledChar() //屏蔽键盘输入的!@#$%^&* 字符
{	
	if ((event.keyCode > 32 && event.keyCode < 48) || (event.keyCode > 57 && event.keyCode < 65) || (event.keyCode > 90 && event.keyCode < 97)) 
	event.returnValue = false;
}

function DisabledSomeKey() //屏蔽键盘输入的'"字符
{	
	if ((event.keyCode == 34 || event.keyCode == 39)) 
	event.returnValue = false;
}

document.onkeypress = DisabledSomeKey;

function checkName(object)//屏蔽键盘输入的字符
{
  var array = new Array("%","@","'");
  var str = object.value;
  var start = 0;
  var end = str.length;
  var newStr = "";
  for(var j = 0; j < end; j++){
    for (var i = 0; i < array.length; i++){
      if(str.indexOf(array[i]) > -1){
	    delStart = str.indexOf(array[i]);
	    delEnd = str.indexOf(array[i]) + 1;
	    if (delStart < 0)
	      ;
	    else{
	      newStr = newStr + str.substring(start,delStart);
	    }
	    if (delEnd > end)
	      ;
	    else{
	      newStr = newStr + str.substring(delEnd,end);
	    }   
	      str = newStr;	    
	    newStr = "";
	  }
    }
  }
  if (str.length != end)
  {
    alert("不能输入@,%,'等特殊字符！");
  }
  object.value=str;
}