function check()
			{
				if(document.Form1.txtbxSubject!=null)
				{
					if(document.Form1.txtbxSubject.value=="")
					{
						alert("please input subject!");
						document.Form1.txtbxSubject.select();
						return false;
					}
				}
				
				if(document.Form1.txtbxCmp.value=="")
				{
					alert("please input company name!");
					document.Form1.txtbxCmp.select();
					return false;
				}
				if(document.Form1.txtbxPerson.value=="")
				{
					alert("please input conatct person!");
					document.Form1.txtbxPerson.select();
					return false;
				}
				if(document.Form1.txtbxTel.value=="")
				{
					alert("please input tel!");
					document.Form1.txtbxTel.select();
					return false;
				}
				if(document.Form1.txtbxEmail.value=="")
				{
					alert("please input email!");
					document.Form1.txtbxEmail.select();
					return false;
				}
				if(document.Form1.txtbxEmail.value.length !=0)
				{
					if(/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.exec(document.Form1.txtbxEmail.value)==null)
					{
						alert("Email Error!");
						document.Form1.txtbxEmail.select();
						return false;
					} 
				}
				if(document.Form1.txtbxContent.value=="")
				{
					alert("please input content!");
					document.Form1.txtbxContent.select();
					return false;
				}
				return true;
			}