var needValidate = false;
var defaultVal2 = "Type your question here and click below...";
function  openchatwindow(cbForm,windowName) {
            var res = true;
            var msg = document.getElementById("lp_msgfield");
            if(needValidate){
                        var validateMessage = "Before you start your chat, type in the following fields:\r\n ";
                        if(msg.value.length==0 || msg.value==defaultVal2 ){
                                    validateMessage += "Your Question\r\n";
                                    res=false;
                        }
                        if(res==false){
                                    alert(validateMessage);
                        }
            }
    var formurl = cbForm.action;
    if(formurl.indexOf('?')==-1)
        formurl += '?';
    var elemCol = cbForm.elements;
    for(var ie=0; ie<elemCol.length; ie++){
        var et = elemCol[ie].type;
        if(et=="text" || et=="hidden" || et=="radio" || et=="textarea"){
            formurl += elemCol[ie].name + "=" + escape(elemCol[ie].value) + "&" ;
        }
    }
            if(res==true)
                        window.open(formurl, windowName,'width=475,height=400,resizable=yes');
            return res;
}