function doSearch(tmpForm) {
  var strzhss = trim(tmpForm.strzhss.value);
  tmpForm.strzhss.value = strzhss;
  var it87 = tmpForm.it87.value;
  if ((strzhss == "") || (strzhss == "开始新搜索...")) {
    alert("请输入关键字！");
    tmpForm.strzhss.focus();
    return false;
  } 
   if (it87 == "pt") {
  	url = "../hy/zwso.asp";
  	tmpForm.action = url;
  }   
  if (it87 == "xm") {
  	url = "../hy/qyxm.asp";
  	tmpForm.action = url;
  }
  if (it87 == "gs") {
  	url = "../hy/zwtp.asp";
  	tmpForm.action = url;
  }
  if(it87 == "zgs") {
  	url = "../hy/zwso.asp";
  	tmpForm.action = url;
  }
  if (it87 == "qy") {
  	url = "../hy/zwsx.asp";
  	tmpForm.action = url;
  }
}
function trim(inputString) {

if (typeof inputString != "string") { return inputString; }
var retValue = inputString;
var ch = retValue.substring(0, 1);
while (ch == " ") { 
  //检查字符串开始部分的空格
  retValue = retValue.substring(1, retValue.length);
  ch = retValue.substring(0, 1);
}
ch = retValue.substring(retValue.length-1, retValue.length);
while (ch == " ") {
 //检查字符串结束部分的空格
 retValue = retValue.substring(0, retValue.length-1);
 ch = retValue.substring(retValue.length-1, retValue.length);
}
while (retValue.indexOf("  ") != -1) { 
 //将文字中间多个相连的空格变为一个空格
 retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); 
}
return retValue;
}