available_width = 0;
			available_height = 0;

			function dosubmit(form, value) {
				document.forms[form].submit(value);
			}


			function Is() {
				agent = navigator.userAgent.toLowerCase();
				this.major = parseInt(navigator.appVersion);
				this.minor = parseFloat(navigator.appVersion);
				this.ns = ((agent.indexOf('mozilla') != -1) && ((agent.indexOf('spoofer')
				== -1)
				&& (agent.indexOf('compatible') ==  -1)));
				this.ns2 = (this.ns && (this.major == 3));
				this.ns3 = (this.ns && (this.major == 3));
				this.ns4b = (this.ns && (this.major == 4) && (this.minor <= 4.03));
				this.ns4 = (this.ns && (this.major == 4));
				this.ns6 = (this.ns && (this.major >= 5));
				this.ie = (agent.indexOf("msie") != -1);
				this.ie3 = (this.ie && (this.major < 4));
				this.ie4 = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.0")
				== -1));
				this.ie5 = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.0")
				!= -1));
				this.ie55 = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.5")
				!= -1));
				this.ie6 = (this.ie && (agent.indexOf("msie 6.0")!=-1) );
				this.aol = (agent.indexOf("aol") != -1);
				this.aol3 = (this.aol && this.ie3);
				this.aol4 = (this.aol && this.ie4);
				this.aol5 = (this.aol && this.ie5);
			}
			var is = new Is();

			if(is.ns4 || is.ns6) {

				available_width = innerWidth;
				available_height = innerHeight;
				} else if(is.ie4 || is.ie5 || is.ie55 || is.ie6) {

				available_width=document.body.clientWidth;
				available_height=document.body.clientHeight;
			}
			available_height -= 180;


			function min(what, value) {
				if (what < value) {
					return value;
				} else {
					return what;
				}
			}