function browser_check(){
 var browser = "unknown";
	var ver     = "0"
	var system  = "unknown";
	this.ver=parseInt(navigator.appVersion);
	this.agent=navigator.userAgent.toLowerCase();
	
	if(this.agent.indexOf("msie")>-1 && document.all &&!this.op5 &&!this.op6 &&!this.ie5&&!this.ie6){browser="ie";ver="4";}
  if(this.agent.indexOf("msie 5")>-1 && !this.op5 && document.designMode && !this.op6){browser="ie";ver="5";}
  if(this.ie5 && this.agent.indexOf("msie 5")>-1 && document.designMode){browser="ie";ver="5";}
	if(this.ie5 && this.agent.indexOf("msie 5.5")>-1 && document.designMode){browser="ie";ver="5.5";}
  if(this.agent.indexOf("msie 6")>-1 && !this.op5 && !this.op6 && document.designMode){browser="ie";ver="6";}
	if(this.agent.indexOf("gecko")>-1 || window.sidebar){browser="ns";ver="6";}
	if(!this.dom && document.layers){browser="ns"; ver="4";}
	if(this.agent.indexOf("opera")>-1){browser="opera";}
	if(this.agent.indexOf("opera 5")>-1 && window.opera){browser="opera";ver="5";}
  if(this.agent.indexOf("opera 6")>-1 && window.opera){browser="opera";ver="6";}
	// Windows systeme
	if(this.agent.indexOf("win")>-1){system="win";}
	if(this.agent.indexOf("nt")>-1 && this.agent.indexOf("win")>-1){system="nt";}
	if(this.agent.indexOf("windows 2000")>-1){system="nt";}
	if(this.agent.indexOf("xp")>-1 && this.agent.indexOf("win")>-1){system="xp";}
	//Mac
	if(this.agent.indexOf("mac")>-1){system="mac";}
	document.formular.browser.value=browser;
	document.formular.ver.value=ver;
	document.formular.system.value=system;
	document.formular.submit();

	
}