// 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 prosearch()
{
    var pn = trim(document.getElementById("pn").value); 
    if (pn.length < 3 )
    {
        alert("Please input more than 3 characters.");
        return;
    }
    else
    {
        window.parent.location.href='/OfferSearch/'+pn + '/1.html'; 
    }
}


function gosearch()
{         
    var k = trim(document.getElementById("key").value);        
    var type = trim(document.getElementById("type").value);
    if (k.length < 3 )
    {
        alert("Please input more than 3 characters.");
        return;
    }

    if ( k != '')
    {
        switch(type)
        {
            case 'productname':
                window.parent.location.href='http://www.lookchem.com/product_search.aspx?type=productname&k='+k;
                break
            case 'cas':                     
                var patn = /^[0-9]{2,7}-[0-9]{1,2}-[0-9]{1}$/
                if(patn.test(k))
                {
                    window.parent.location.href = 'http://www.lookchem.com/product_search.aspx?type=cas&k='+ k ;    
                    break;
                }
                else
                {
                    alert("Please enter a valid cas number.");
                }   　　                
                break
            case 'buy':
                window.parent.location.href='http://www.lookchem.com/ForSeller/search.aspx?type=buy&k='+k;
                break
            case 'formula':
                window.parent.location.href='http://www.lookchem.com/product_search.aspx?type=formula&k='+k;
                break
            case 'suppliers':　　
                window.parent.location.href='http://www.lookchem.com/Suppliers_Search.aspx?type=suppliers&k='+k;
                break
            case 'msds':
                window.parent.location.href='http://www.lookchem.com/msds.aspx?type=msds&k='+k;
                break              
            default:
        }
    }
    else
    {
        alert("Please enter keyword.");
    }　　    
}