var submitForm = true;

// 验证FORM提交的状态
function setSubmit(b)
{
	submitForm = b;
}

// 验证FORM提交的参数
function checkForm()
{
	try
	{
		if(!submitForm)
		{
			throw "表单已提交";
		}

		var eSrc = null;
		if(document.layers)
		{
			eSrc = window.event.target;
		}
		else if(document.all)
		{
			eSrc = window.event.srcElement;
		}

		var frm = eSrc;
		
		return checkFormByForm(frm);
	}
	catch(err)
	{
		alert(err);
		return false;
	}
}

// 验证FORM提交的参数
function checkFormByForm(frm)
{
	try
	{
		var eSrc = null;
		if(document.layers)
		{
			eSrc = window.event.target;
		}
		else if(document.all)
		{
			eSrc = window.event.srcElement;
		}

		var curField = null;

		for (i=0; i<frm.tags("INPUT").length; i++)
		{
			curField = frm.tags("INPUT")(i);
			if("text" != curField.type.toLowerCase()&&"file" != curField.type.toLowerCase())
			{
				 continue;
			}
			else if(!curField.datatype)
			{
				 continue;
			}
			var strDataType = curField.datatype.toLowerCase();
			if("string" == strDataType || "file" == strDataType)
			{
				if("" == curField.value)
				{
					if(curField.nullable && "true"!=curField.nullable.toLowerCase())
					{
						curField.focus();
						throw curField.caption+"不可为空";
					}
				}
			}
			else if("date" == strDataType)
			{
				if("" == curField.value)
				{
					if(curField.nullable && "true"!=curField.nullable.toLowerCase())
					{
						curField.focus();
						throw curField.caption+"不可为空";
					}
				}
				else if(!isDate(curField.value,curField.format))
				{
					curField.focus();
					throw curField.caption+"日期格式不对";
				}
			}
			else if("long" == strDataType || "double" == strDataType)
			{
				if("" == curField.value)
				{
					if(curField.nullable && "true"!=curField.nullable.toLowerCase())
					{
						curField.focus();
						throw curField.caption+"不可为空";
					}
				}
				else if(isNaN(curField.value))
				{
					curField.focus();
					throw curField.caption+"数字格式不对";
				}
			}
			else if("email" == strDataType)
			{
				if("" == curField.value)
				{
					if(curField.nullable && "true"!=curField.nullable.toLowerCase())
					{
						curField.focus();
						throw curField.caption+"不可为空";
					}
				}
				else if(!isMail(curField.value))
				{
					curField.focus();
					throw "电子邮箱格式不对";
				}
			}
		}
		if(frm.name.toLowerCase() == "login")
		{
			curField = frm.username;
			if(curField && "object" == typeof(curField) && "" == curField.value)
			{
				curField.focus();
				throw "请输入登录名称";
			}
			curField = frm.password;
			if(curField && "object" == typeof(curField) && "" == curField.value)
			{
				curField.focus();
				throw "请输入访问密码";
			}
		}
		else if(frm.name.toLowerCase() == "emailsubcribeform")
		{
			curField = frm.productName;
			if(curField && "object" == typeof(curField))
			{
				var blnTmpSelect = false;
				if(curField.length>0)
				{
					if(eSrc.name.toLowerCase() == "marketsubscribe")
					{
						var count = 0;
						for(i=0;i<curField.length;i++)
						{
							if(curField[i].checked==true)
							{
								blnTmpSelect=true;
								count++;
								if(count>3)
								{
									throw "最多选择三个行业";
								}
							}
						}
					}
					else
					{
						for(i=0;i<curField.length;i++)
						{
							if(curField[i].checked==true)
							{
								blnTmpSelect=true;
								break;
							}
						}
					}
				}
				else
				{
					blnTmpSelect = curField.checked;
				}
				if(!blnTmpSelect)
				{
					throw "至少选择一个行业";
				}
			}
		}

		filecheck(frm);
		return true;
	}
	catch(err)
	{
		alert(err);
		return false;
	}
}

// 根据窗口的状态显示文字信息
// 窗口为独立的窗口，显示关闭
// 窗口内嵌在别的窗口，显示返回
function showlink()
{
	if(self!=top || history.length>0)
	{
		document.write("<a href=\"javascript:history.back()\" style=\"font-family:Arial,Helvetica,Verdana; color:#333333; font-weight:600; \">返回</a>");
	}
	else
	{
		document.write("<a href=\"javascript:window.close()\" style=\"font-family:Arial,Helvetica,Verdana; color:#333333; font-weight:600; \">关闭</a>");
	}
	window.focus();
}

// 判断窗口是否存在FILE类型元素
// 若为真，则窗口encoding为multipart/form-data
// 若为假，则窗口encoding为application/x-www-form-urlencoded
function filecheck(frm)
{
	for (i=0; i<frm.tags("INPUT").length; i++)
	{
		if("file" == frm.tags("INPUT")(i).type.toLowerCase())
		{
			frm.encoding = "multipart/form-data";
			break;
		}
	}
}

function goPage(i)
{
	var frm = document.listfrm;
	frm.page.value = i;
	if(isNaN(frm.page.value))
	{
		alert("Page Value Must Be Numbers !");
		return false;
	}
	if (parseInt(frm.page.value)<0 || parseInt(frm.page.value)>parseInt(frm.pagecount.value))
	{
		alert("Page Value is Out of Range !");
		return false;
	}
	frm.submit();
	return false;
}

function selectall(obj)
{
	var eSrc = null;
	if(document.layers)
	{
		eSrc = window.event.target;
	}
	else if(document.all)
	{
		eSrc = window.event.srcElement;
	}

	if(obj && "object" == typeof(obj))
	{
		if(obj.length)
		{
			for(i=0;i<obj.length;i++) obj[i].checked = eSrc.checked;
		}
		else
		{
			obj.checked = eSrc.checked;
		}
	}
}

function checkSelect(obj)
{
	try
	{
		curField = obj;
		if(curField && "object" == typeof(curField))
		{
			var blnTmpSelect = false;
			if(curField.length>0)
			{
				for(i=0;i<curField.length;i++)
				{
					if(curField[i].checked==true)
					{
						blnTmpSelect=true;
						break;
					}
				}
			}
			else
			{
				blnTmpSelect = curField.checked;
			}
			if(!blnTmpSelect)
			{
				throw "至少选择一个主题";
			}
		}
		else
		{
			throw "没有可选择的主题";
		}
		return true;
	}
	catch(err)
	{
		alert(err);
		return false;
	}
}