// 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()
    {         
        var k = trim(document.getElementById("searchkeys").value);  
        var type=trim(document.getElementById("searchtype").value);   
         
        if (k.length < 3 )
        {
            alert("Please input more than 3 characters.");
            return;
        }
        
        if ( k != '')
        {
            switch(type)
　　        {
　　            case 'name':
                    window.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.location.href = 'http://www.lookchem.com/product_search.aspx?type=cas&k='+ k ;    
                        break;
                    }
                    else
                    {
                      alert("Please enter a valid cas number.");
                    }   　　                
　　                break
//　　            case 'name':
//                    window.location.href='search.aspx?type=buy&k='+k;
//                    break
//　　            case 'formula':
//                    window.location.href='http://www.lookchem.com/product_search.aspx?type=formula&k='+k;
//                    break
//                case 'suppliers':　　
//                    window.location.href='http://www.lookchem.com/Suppliers_Search.aspx?type=suppliers&k='+k;
//                    break
//                case 'msds':
//                    window.location.href='/msds.aspx?type=msds&k='+k;
//                    break              
                default:
　　        }
　　    }
　　    else
　　    {
　　        alert("Please enter keyword.");
　　    }　　    
    }
	function goprosearch()
	{

	 var prokey=trim(document.getElementById("prokeys").value);
	var protype=trim(document.getElementById("prosearchtype").value);	
	 if(prokey.length<3)
	  {
	   alert("Please input more than 3 characters.");
	   document.getElementById("prokeys").focus();
	   return false;
	  }
	  if(prokey!='')
	  {
		  switch(protype)
		  {
			case 'product':
			  window.location.href='/product/?prosearchtype=product&prokeys='+k;
			  break;
			case 'casno':
			 var patn = /^[0-9]{2,7}-[0-9]{1,2}-[0-9]{1}$/
			 if(patn.test(prokey))
			 {
			   window.location.href='/product/?productsearchtype=cas&prokeys'+k;	 
			   break;
			 }
			 else
			 {
			  alert("Please enter a valid cas number.");	
			  document.getElementById("prokeys").focus();
			  return false;
			 }
			 break;
			 default:
		  }
	  }
	 
	}
    
    function changenav(obj)
    {
        document.getElementById("productname").className="";
        document.getElementById("cas").className="";
         document.getElementById("buy").className="";
        document.getElementById("suppliers").className="";
        document.getElementById("msds").className="";
        document.getElementById(obj).className="search_Input_3";
        type = obj;
    }