/******************************* common ***************************************/

function redirect(url){
    setTimeout(function(){window.location = url;},0);
}

function getPageScroll() {
    var xScroll, yScroll;
    if (self.pageYOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop) {
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {// all other Explorers
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;
    }
    return new Array(xScroll,yScroll)
}

function getPageHeight() {
    var windowHeight
    if (self.innerHeight) { // all except Explorer
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) {
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
      windowHeight = document.body.clientHeight;
    }
    return windowHeight
}

function isArray(obj) {
    if(obj.constructor.toString().indexOf("Array") == -1)return false;
    else return true;
}

function str_replace(search, replace, subject){
    if(isArray(subject)){
        return subject[0].replace(new RegExp(search,"gi"), replace);
    }else{
        return subject.replace(new RegExp(search,"g"), replace);
    }
}

function count(search, subject) {
    var i = 0;
    var pos = subject.indexOf(search);
    var result = subject.substring(0);
    do {
        if (pos == -1) {
            return i;
        }
        result = result.substring(pos + search.length);
        pos = result.indexOf(search);
        i++;
    } while (i > 0);
    return false;
}

function randString() {
	var chars = "ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
	var string_length = 10;
	var randomstring = '';
	for (var i=0; i<string_length; i++) {
		var rnum = Math.floor(Math.random() * chars.length);
		randomstring += chars.substring(rnum,rnum+1);
	}
	return randomstring;
}