// JScript 文件

function ltrim(s){return s.replace( /^\s*/, "");}
//去右空格;
function rtrim(s){return s.replace( /\s*$/, "");}
//左右空格;
function trim(s){return rtrim(ltrim(s));}

    function gosearch()
    {     
    if(document.getElementById("k").value.length<3)
    {
    alert("Please input more than 3 characters.");
            return;
    }    
        var k = trim(document.getElementById("k").value);        
        var type = document.getElementById("type").value;
       
        
        if ( k != '')
        {
            switch(type)
　　        {
　　            case 'productname':
                    window.location.href='/Chemicals-Search.aspx?type=productname&k='+k;
                    break
                case 'cas':                     
                    var patn = /^[0-9]{2,7}-[0-9]{2}-[0-9]{1}$/
                    if(patn.test(k))
                    {
                        window.location.href = '/Chemicals-Search.aspx?type=cas&k='+ k ;    
                        break;
                    }
                    else
                    {
                      alert("Please enter a valid cas number.");
                    }   　　                
　　                break;  
                default:
　　        }
　　    }
　　    else
　　    {
　　        alert("Please enter keyword.");
　　    }　　    
    }
    
    
function gogoogle()
{
    var key =trim(document.getElementById("gok").value); 
    if ( key != '')
    {
        window.location.href='http://www.google.com/search?hl=en&q='+key+'&btnG=Google+Search&aq=f&oq=';
    }
    else
    {
        alert("Please enter keyword.");
    }
}