function CheckSearch(form){
  if(form.keyword.value.length<4){
     alert("搜索字符至少要4个字符！");
	 form.keyword.focus();
	 return false;
  }
}
function CheckProSearch(form){
   if(form.keyword.value==""){
      alert("请填写搜索关键词！");
	  form.keyword.focus();
	  return false;
   }
  return true;
}
function CheckSubmit(form){
   var flag = false;
	 for(i=0;i<form.elements.length;i++){
		if(form.elements[i].name=="id"&&form.elements[i].checked==true){
		   flag = true;
		   break;
		}  
	  }
   if(!flag){
      alert("请先选择您要询价的Ic型号!");
	  return false;
   }
   if(form.contact.value==""){
      alert("请填写联系公司/人!");
	  form.contact.focus();
	  return false;
   }
   if(form.tel.value==""){
      alert("请填写您的联系电话!");
	  form.tel.focus();
	  return false;
   }
   return true;

}
function CheckFeedback(form){
   if(form.company.value==""){
      alert("请填写公司名称！");
	  form.company.focus();
	  return false;
   }
   if(form.contact.value==""){
      alert("请填写联系人！");
	  form.contact.focus();
	  return false;
   }
   if(form.tel.value==""){
      alert("请填写联系电话！");
	  form.tel.focus();
	  return false;
   }
   if(form.content.value==""){
      alert("请填写留言内容!");
	  form.content.focus();
	  return false;
   }
   return true;
}

function changeselect()
  {
    var selecttype=document.all.searchcontent.value;
   if (selecttype == 2)
    { 
       document.all.searchtype.disabled =true;
    }        
       if (selecttype == 3)
    { 
       document.all.searchtype.disabled =true;
    }  
	   if (selecttype == 4)
    { 
       document.all.searchtype.disabled =true;
    }  
	   if (selecttype == 1)
    { 
       document.all.searchtype.disabled =false;
    }  
	   if (selecttype == 5)
    { 
       document.all.searchtype.disabled =false;
    }      
 }    
function changecolor(cssfile){
	   $("#cssfilepath").attr("href",cssfile);
	}