function checksize() {
			var iTotalWidth = 978;
			var iClientWidth = document.body.scrollWidth;
			var oContainer = document.getElementById("container");
			var oFooter = document.getElementById("footer");
			
			//if-statement calls var from detect.js and sets leftmargin to
			//footer-div and container-div
			if (isIE) {
				oContainer.style.marginLeft = (iClientWidth-iTotalWidth)/2+'px';				
				oFooter.style.marginLeft = (iClientWidth-iTotalWidth)/2+'px';				
			}
			/*
			if(lib_bwcheck()){
				//alert(document.body.clientHeight + ' '+ document.getElementById('container').offsetHeight);
				if((document.body.clientHeight-document.getElementById('footer').offsetHeight) > document.getElementById('container').offsetHeight){
					//alert(document.body.clientHeight-document.getElementById('footer').offsetHeight + 'px');
					document.getElementById('container').style.height = document.body.Height-document.getElementById('footer').offsetHeight + 'px';
				}
			}
			else {

				var oMenu = document.getElementById('menu_main');
				var iMenuHeight = oMenu.offsetHeight;
				
				var oHeader = document.getElementById('header');
				var iHeaderHeight = oHeader.offsetHeight;
				
				var oContent = document.getElementById('content');
				var iContentHeight = oContent.offsetHeight;
				
				var oFooter = document.getElementById('footer');
				var iFooterHeight = oFooter.offsetHeight;
							
				var iAvailScreenHeight = document.body.scrollHeight;
								
				var iTotalHeight = iMenuHeight + iHeaderHeight + iFooterHeight + iContentHeight;
				//alert(iTotalHeight);
							
				var iContentHeight = iAvailScreenHeight - (iHeaderHeight + iFooterHeight + iMenuHeight);
			
				var oMainContent = document.getElementById('content');
			
				if (iTotalHeight < iAvailScreenHeight) {
                	oMainContent.style.height = iContentHeight + 'px';
	
				}
				
				/*
				t = document.getElementById('container').offsetHeight - document.getElementById('header').offsetHeight - document.getElementById('footer').offsetHeight - document.getElementById('menu_main').offsetHeight+23;
				if (document.getElementById('content').offsetHeight < t ){
					document.getElementById('content').style.height = t;
				}
				
			//}
			*/
		}
		
		function submitenter(myfield,e){
	  		var keycode;
			if (window.event) keycode = window.event.keyCode;
			else if (e) keycode = e.which;
			else return true;
	  		if (keycode == 13){
	  			myfield.form.submit();
	  			return false;
	  		}
	  		else return true;
		}
		
		function lib_bwcheck() { //Browsercheck (needed)
		    this.ver=navigator.appVersion
		    this.agent=navigator.userAgent
		    this.dom=document.getElementById?1:0
		    this.opera5=(navigator.userAgent.indexOf("Opera")>-1 && document.getElementById)?1:0
		    this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
		    this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
		    this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
		    this.ie=this.ie4||this.ie5||this.ie6
		    this.mac=this.agent.indexOf("Mac")>-1
		    this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
		    this.ns4=(document.layers && !this.dom)?1:0;
		    this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
		    
		    return this.ie
		}