// browser check (needed for hacks, bug fixes and special features in specific browsers)
function browserCheck()
{
	this.ua = navigator.userAgent.toLowerCase();
	this.dom = document.getElementById ? 1 : 0;
	this.op7 = (this.dom && this.ua.indexOf('opera 7') > -1 || this.ua.indexOf('opera/7') > -1) ? 1 : 0;
	this.ie5 = (this.dom && this.ua.indexOf('msie 5') > -1) ? 1 : 0;
	this.ie6 = (this.dom && this.ua.indexOf('msie 6') > -1) ? 1 : 0;
	this.moz = (this.dom && this.ua.indexOf('mozilla') > -1 && this.ua.indexOf('gecko') > -1) ? 1 : 0;
}

// browser check variable
var bw = new browserCheck();