// getElementById ---
function $gEId(pstr_id){
	return document.getElementById(pstr_id);
}
// Validate Correct URL or Email
//pstr element with URL or Email
//pw - name (URL or Email)
function validateURL(pstr, pw){
	var tmp = pstr.substr(pstr.indexOf(".")+1, (pstr.length - pstr.indexOf(".")-1))
	if(pstr.indexOf("@") == -1 || pstr.indexOf(".") == -1 || tmp.length > 3 ) {
			alert("The "+pw+" is not correct. Please correct it.");
		return false;
	} 
	return true;
}
//Validate prohibit symbols in string
//pstr - string value
//field - name of feild
function validateText(pstr, field){
	var asmb = new Array('<', '/', '&', '>');
	for(var i=0; i<asmb.length; i++){
		if(pstr.indexOf(asmb[i]) != -1){
			alert("The field \'"+field+"\' includes prohibited symbol - \""+asmb[i]+"\"\nPlease correct it.");
			return false;
		}	
	}
	return true;
}
//Validate field
var err_color = "#ffdfdf";
function checkField(el, name, bempty){
	el.value = lrTrim(el.value)
	var bret = validateText(el.value, name);
	if(!bret){
		el.style.background = err_color; el.focus();
	} else {
		el.style.background = "#ffffff";
		if(bempty && el.value.length == 0){
			alert("You need to feel in your \'"+name+"\'.")
			el.style.background = err_color; el.focus(); bret = false;
		}
	}
	return bret;
}
//Convert form date in to query string
function formD2QStr(docForm, formatOpts) {
	var opts = formatOpts || {};
	var str = '';
	var formElem;
	var lastElemName = '';
	for (i = 0; i < docForm.elements.length; i++) {
		formElem = docForm.elements[i];
			switch (formElem.type) {
			// Text fields, hidden form elements
			case 'text':
			case 'hidden':
			case 'password':
			case 'textarea':
			case 'select-one':
				var str_value = formElem.value;
//				while (str_value.indexOf('"') != -1){
//					str_value = str_value.replace('"', '%');
//				}
				str += formElem.name + '=' + encodeURI(str_value) + '&'
			break;


			// Multi-option select
			case 'select-multiple':
				var isSet = false;
				for(var j = 0; j < formElem.options.length; j++) {
					var currOpt = formElem.options[j];
					if(currOpt.selected) {
						if (opts.collapseMulti) {
							if (isSet) {
								str += ',' + encodeURI(currOpt.value);
							} else {
								str += formElem.name + '=' + encodeURI(currOpt.value);
							isSet = true;
							}
						} else {
							str += formElem.name + '=' + encodeURI(currOpt.value) + '&';
						}
					}
				}
				if (opts.collapseMulti) { str += '&'; }
				break;

			// Radio buttons
			case 'radio':
				if (formElem.checked) 
					str += formElem.name + '=' + encodeURI(formElem.value) + '&'
				break;

			// Checkboxes
			case 'checkbox':
				if (formElem.checked) {
					// Collapse multi-select into comma-separated list
					if (opts.collapseMulti && (formElem.name == lastElemName)) {
						// Strip of end ampersand if there is one
						if (str.lastIndexOf('&') == str.length-1) {
							str = str.substr(0, str.length - 1);
						}
						// Append value as comma-delimited string
						str += ',' + encodeURI(formElem.value);
					} else {
						str += formElem.name + '=' + encodeURI(formElem.value);
					}
					str += '&';
					lastElemName = formElem.name;
				}
				break;
		}
	}
	// Remove trailing separator
	str = str.substr(0, str.length - 1);
	return str;
}
function leftTrim(pstr){ while(pstr.indexOf(" ") == 0 ) {pstr = pstr.replace(" ", "");} return pstr;}
function rightTrim(pstr){var s_sp = " ";  while(pstr.charAt(pstr.length-1) == s_sp.charAt(0)){pstr = pstr.substr(0, pstr.length-1);} return pstr;}
function lrTrim(pstr){return rightTrim(leftTrim(pstr));}