var isIE = document.all && window.external; 
 if(isIE !=null)
{
  // alert("dddddddddddddddddddddddd");
   document.write('<style type="text/css"> .main_banner {position:relative;} </style>');
}
var menuids=["suckertree1"] 

function buildsubmenus(){
for (var i=0; i<menuids.length; i++){
  var ultags=document.getElementById(menuids[i]).getElementsByTagName("ul")
    for (var t=0; t<ultags.length; t++){
    ultags[t].parentNode.getElementsByTagName("a")[0].className="subfolderstyle"
    ultags[t].parentNode.onmouseover=function(){
    this.getElementsByTagName("ul")[0].style.display="block"
    }
    ultags[t].parentNode.onmouseout=function(){
    this.getElementsByTagName("ul")[0].style.display="none"
    }
    }
  }
}



function tc_cd(id)
{
	var dh_menu = document.getElementById(id);
	dh_menu.style.display = "block";
}
function gb_cd(id)
{
   
	var dh_menu = document.getElementById(id);
	dh_menu.style.display = "none";
}

function bh_nr(sz)
{	
	for (var i =1 ; i < 4 ; i++)
	{
	    document.getElementById("tt_" + i).className = " ";
		document.getElementById("nr_" + i).style.display = "none";
	}
	document.getElementById("tt_" + sz).className = "over";
	document.getElementById("nr_" + sz).style.display = "block";
}

 function ischeck()
 {
          
            var email = document.getElementById("email").value;
                        if (email != "") {
                            var reg = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
                            isok= reg.test(email );
                            if (!isok) {
                                alert("Please Check Your Email Address！");
                                document.getElementById("email").focus();
                                return false;
                            }
                        }
                        else
                        {
                           alert("Please Finish Your Email Address！");
                                document.getElementById("email").focus();
                                return false;
                        }
}

 function ischeck1()
 {
          
            var email = document.getElementById("email1").value;
                        if (email != "") {
                            var reg = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
                            isok= reg.test(email );
                            if (!isok) {
                                alert("Please Check Your Email Address！");
                                document.getElementById("email1").focus();
                                return false;
                            }
                        }
                        else
                        {
                           alert("Please Finish Your Email Address！");
                                document.getElementById("email1").focus();
                                return false;
                        }
}