// JavaScript Document
var win;
function validation(frm) {

var counter = 0;
arrLang	= document.getElementsByName("lang[]");
elements_length	= arrLang.length;

	for (i=0;i<elements_length;i++) { 
		if (arrLang[i].checked == true) {
			counter++;
		}
	}
	if (counter<1) {
		alert('Please select at least one language.');
		return false;
    } else {
		return true;
	}
}



function checkAll() { 
arrLang	= document.getElementsByName("lang[]");
elements_length	= arrLang.length;
chkSelectAll	= document.getElementById("checkall");
	for (i=0;i<elements_length;i++) {
		arrLang[i].checked = chkSelectAll.checked 
	}	

}



function countinueAction(buttVal) { 
	if (validation(document.order_languages)) {		
		try{
			if(win){
				win.close();
			}
			win=window.open('about:blank','calculate_price','left=200,top=200,width=770,height=270');
			if(win){
				win.focus();
			}
			document.order_languages.submit();
		}
		catch(e){
			alert("Sorry but some error occured. Please try again\n\n"+ e.description);
		}
	}
}