var sear_sel = new Array();
if(channel==2){
	sear_sel[2]=" selected";
	sear_sel[1]='';
	sear_sel[3]='';
}else if(channel==6){
	sear_sel[2]='';
	sear_sel[1]='';
	sear_sel[3]=" selected";
}else{
	sear_sel[1]=" selected";
	sear_sel[2]='';
	sear_sel[3]='';
}
document.write('<table border="0" cellpadding="0" cellspacing="0"><form method="post" name="searchfrm" action=""><tr><td width="100%"><input type="text" name="key" size="16" value="请输入关键字..." onKeyPress="keypFunc(event,this.form)" style="height:20px;font-size:12px">&nbsp;<select name="sel_type" style="height:20px;font-size:12px"><option value="products"'+sear_sel[1]+'>采购仪器</option><option value="rental"'+sear_sel[2]+'>租赁仪器</option><option value="article"'+sear_sel[3]+'>技术文章</option></select>&nbsp;<input type="image" src="/images/btn_search.gif" align="absmiddle" name="image" onClick="javascript:searchclick(this.form)"><input type="hidden" name="prosrh_input" value=""><input type="hidden" name="rentalsrh_input" value=""><input type="hidden" name="techsrh_input" value=""></td></tr></form></table>');
function searchclick(frm){
			     var act='';
				 var keyvalue;
				 if(frm.key.value == '请输入关键字...') 
				     keyvalue='';
				 else
				     keyvalue=frm.key.value;
				 if(frm.sel_type.options[frm.sel_type.selectedIndex].value=='products'){
				    act='/search/search_products.php';
				    frm.prosrh_input.value=keyvalue;
				 }else if(frm.sel_type.options[frm.sel_type.selectedIndex].value=='rental'){
				    act='/search/search_rental.php';
					frm.rentalsrh_input.value=keyvalue;
				 }else if(frm.sel_type.options[frm.sel_type.selectedIndex].value=='article'){
				    act='/search/search_technic.php';
				    frm.techsrh_input.value=keyvalue;
				 }
				 frm.action=act; //frm.submit();
			  }			  
			  function keypFunc(e,frm){
			     var charCode=(navigator.appName=='Netscape')?e.which:e.keyCode;
			     //alert(charCode);
			     if(charCode==13){
			        searchclick(frm);
			     }
 			  }