	function pop_up_param (iw, ih) {
		var adj=10
		var w = screen.width;
		var h = screen.height;
		var byFactor=1;

		if(w<740)
			{
				var lift=0.90;
			}

		if(w>=740 & w<835)
			{
				var lift=0.91;
			}

		if(w>=835)
			{
				var lift=0.93;
			}
	   
		var scrWidth = w-adj;
		var scrHeight = (h*lift)-adj;

		var posLeft=0;
		var posTop=0;

		var scrHeightTemp = ih - 0;

		if (scrHeightTemp < scrHeight) 
			{
				scrHeight = scrHeightTemp;
			} 

		var scrWidthTemp = iw - 0;

		if (scrWidthTemp < scrWidth) 
			{
				scrWidth = scrWidthTemp;
			}
	  
		if (scrHeight<100)
			{
				scrHeight=100;
			}
		if (scrWidth<100)
			{
				scrWidth=100;
			}

		posTop =  ((h-(scrHeight/lift)-adj)/2);
		posLeft = ((w-(scrWidth)-adj)/2);

		posTop = parseInt(posTop);
		posLeft = parseInt(posLeft);		

		s_top=posTop;
		s_left=posLeft;
	}

	function View( iw, ih, daLink ) {
		var comwin; 

		pop_up_param (iw, ih);

		comwin = window.open( "preview.php3?image="+daLink, "View","width="+iw+",height="+ih+",scrollbars=no,resizable=no,left="+this.s_left+",top="+this.s_top);
		comwin.focus() ;	    
	}

	function CoursesOrder (cid) {
		var comwin; 

		iw=575;
		ih=600;

		pop_up_param (iw, ih);

		comwin = window.open( "popup/order.php3?cid="+cid, "View","width="+iw+",height="+ih+",scrollbars=yes,resizable=no,left="+this.s_left+",top="+this.s_top);
		comwin.focus() ;	    
	}

	function PreviewImage ( iw, ih, iid ) {
		pop_up_param (iw, ih);

  		src= open("", "","width=" + iw + ",height=" + ih + ",scrollbars=no,resizable=no,top=0,left="+this.s_left+",top="+this.s_top);
  		src.document.open();
		src.document.write("<html>\n");
		src.document.write("<head>\n");
		src.document.write("</head>\n");
		src.document.write('<body marginwidth="0" marginheight="0" topmargin="0" leftmargin="0" bgcolor="#FFFFFF">\n');
		src.document.write('<img src="' + iid + '" width="' + iw + '" border="0">\n');
		src.document.write("</body>\n");
		src.document.write("</html>\n");
		src.document.close();  
	}
