jQuery Grid Plugin - jqGrid

Hi,

Is there anyway to validate the search field (I'm using custom search) before sending request to server? Validation is working fine with row editing and adding mode. Let say I want to search column price and error message should occur when user enters a text in search field.

If search returns no data, I want to post a message on the screen. I see no events in search funtion that can get the server response. The onClose event happened when the search box is closed, but I dont know how to get the server response from this.

Another question, I've tried to use gridResize but it's not working,  everything esle is working just fine, I see no resize icon in bottom right corner. Please take a look at my code below:

jQuery("#list").jqGrid('gridResize',{minWidth:350,maxWidth:800,minHeight:80, maxHeight:350});