function sendSearch(term){
             term.value = trim(term.value);
             term = term.value;
             if(term != ""){
                window.location = "searchadv.aspx?IsSubmit=true&SearchTerm="+term;
             }else{
                alert("Search bar cannot be empty.");
             }
             
             return false;
}
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"), "");
}
function validKey(k){
    var keyNum = 0;
    /*if(typeof (k.charCode) == 'undefined' ){
        keyNum = k.keyCode;
    }else{
        keyNum = k.charCode;
    }*/
    keyNum =  (k.which) ? k.which : event.keyCode;
    if( ! ( (keyNum >=65 && keyNum <=90) ||  (keyNum >=97 && keyNum <=122)  ||  (keyNum >=48 && keyNum <=57) || (keyNum ==32) || (keyNum ==8) )){
        return false;
    }
    return true;

}