var yodaoDefault="请输入搜索关键字...";
						var focusFlag = false;
						function inputFocus(e){
								if(e.value== yodaoDefault) {
										e.value='';
								}
								focusFlag = true;
								e.style.color="black";
								e.style.font="14px '宋体',arial";
						}
						function inputFocus_lost(e){
								if(e.value=="") {
										e.value=yodaoDefault;
								}
								focusFlag = false;
								e.style.color="black";
								e.style.font="14px '宋体',arial";
						}
						function checkInput(){
								var e = document.getElementById("key");
								kk=e.value;
								kk=kk.replace(" ","");
								if(kk!="" && kk!=yodaoDefault){
									document.sb.submit();
								}else{
								alert("请先输入搜索关键字！");
								}
						}