function showSearch()
{
	var content = trim(document.getElementById('txtSearch').value," ");

	if(content == "" || document.getElementById('txtSearch').value == "Search")
	{ 
		alert("Please provide the search criteria.");
		document.frmSearch.searchStr.focus();
		return false;
	}
	var str_test = /^[a-zA-Z0-9 !@$\&\*\^.]+$/.test(content);
	if(str_test == false)
	{
		alert("Please Enter valid search criteria.");
		document.frmSearch.searchStr.focus();
		return false;
	}
	else
	{
		document.frmSearch.submit();
	}
}

function remove_text(){
	if(document.getElementById("txtSearch").value == "Search"){
		document.getElementById("txtSearch").value = ''
	}
}

function put_text(){
	if(document.getElementById("txtSearch").value == ""){
		document.getElementById("txtSearch").value = 'Search';
	}
}

function trim(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}
 
function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
 
function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}