function doCheck_(){if($('Name').value.trim() == "" || $('Name').value.trim() == fs('Name')){$("Name").className = "Error Redborder";$('Name').select();return false;}else{$("Name").className = "Ok";}if($('telephone').value.trim() == "" || $('telephone').value.length < 7 || $('telephone').value.trim() == fs('telephone')){$("telephone").className = "Error Redborder";$('telephone').select();return false;}else{$("telephone").className = "Ok";}if(!IsEmail($('email').value.trim())){$("email").className = "Error Redborder";$('email').select();return false;}else{$("email").className = "Ok";}if($('content_').value.trim() == "" || $('content_').value.trim() == fs('content_')){alert("请填写您的咨询内容！");$('content_').select();return false;}}function IsEmail(strEmail){if(strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1){return (true);	}else{return (false);	}}function $(id){return document.getElementById(id);}String.prototype.trim = function(){return this.replace(/(^\s*)|(\s*$)/g, "");}
  
  	chk = function (c){
		switch(c){
			case 'Name':
				if($(c).value.trim() == "" || $(c).value.trim() == fs(c)){$(c).value = fs(c);}break;
			case 'telephone':
				if($(c).value.trim() == "" || $(c).value.trim() == fs(c)){$(c).value = fs(c);}break;
			case 'email':
				if($(c).value.trim() == "" || $(c).value.trim() == fs(c)){$(c).value = fs(c);}break;
			case 'content_':
				if($(c).value.trim() == "" || $(c).value.trim() == fs(c)){$(c).value = fs(c);}break;
		}
	}
	c = function(n){if ($(n).value.trim() == fs(n) || $(n).value.trim() == ""){$(n).value = "";}}
	
	fs = function(n){
		switch(n){
			case 'Name':
				return "请输入您的名字";
				break;
			case 'telephone':
				return "请输入您的联系电话";
				break;
			case 'email':
				return "请输入您的电子邮箱";
				break;
			case 'content_':
				return "请在此留言，我们会及时联系您";
				break;
		}
	}
		showintro = function(){
		if ($('isshow').style.display == 'block'){
			$('isshow').style.display = 'none';
		}else{
			$('isshow').style.display = 'block';
		}
	}